求翻譯這段話，化工相關(guān)的，20分奉上

wenshaoyi 2018-11-17 07:21:42 304 瀏覽

ThethreelevelcontrollersareproportionalwithKC=2.ThepressurecontrollershavetheAspendefaultsettingsofKC=20and?I=12min.Thetwocompositioncontrollersaretunedsequentially... The three level controllers are proportional with K C = 2. The pressure controllers have the Aspen default settings of K C = 20 and ?I = 12 min. The two composition controllers are tuned sequentially. Since the CCxD loop is blending two streams， its dynamics are fast with the composition deadtime the only dynamic element in the loop. So the distillate composition controller CCxD is tuned with the bottoms loop on manual. Then the bottoms composition controller CCxB is tuned with the distillate loop on automatic. Deadtimes of 3 min are inserted in the loops to account for composition measurement delays. Relay-feedback testing and Tyreus-Luyben settings give controller tuning constants K C = 0.40 and _ I = 37 min for the CCxB controller and K C = 22 and _ I = 13 min for the CCxD controller. 展開(kāi)

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求翻譯這段話，化工相關(guān)的，20分奉上: ThethreelevelcontrollersareproportionalwithKC=2.ThepressurecontrollershavetheAspendefaultsettingsofKC=20and?I=12min.Thetwocompositioncontrollersaretunedsequentially... The three level controllers are proportional with K C = 2. The pressure controllers have the Aspen default settings of K C = 20 and ?I = 12 min. The two composition controllers are tuned sequentially. Since the CCxD loop is blending two streams， its dynamics are fast with the composition deadtime the only dynamic element in the loop. So the distillate composition controller CCxD is tuned with the bottoms loop on manual. Then the bottoms composition controller CCxB is tuned with the distillate loop on automatic. Deadtimes of 3 min are inserted in the loops to account for composition measurement delays. Relay-feedback testing and Tyreus-Luyben settings give controller tuning constants K C = 0.40 and _ I = 37 min for the CCxB controller and K C = 22 and _ I = 13 min for the CCxD controller. 展開(kāi)

化工專業(yè)英語(yǔ)求翻譯: Hollow polymeric spheres have been attracting increasing interest because of their potential applications， which range from targeted drug delivery to advanced functional materi- als.[1，2] Because of their hollow core structure， such poly... Hollow polymeric spheres have been attracting increasing interest because of their potential applications， which range from targeted drug delivery to advanced functional materi- als.[1，2] Because of their hollow core structure， such polymeric spheres can encapsulate large quantities of guest moleculesD especially those spheres with functionalities within the empty coreDand release them at a later stage in a controlled man- ner. Although hollow polymeric spheres with dimensions in the micrometer and submicrometer regions are readily con- structedDby layer-by-layer deposition of polyelectrolytes onto a template core，[3±6] polymerizing monomers in lipid vesi- cles，[7，8] emulsion polymerization，[9，10] pH-induced micelliza- tion of a grafted copolymer，[11] and by the assembly of posi- tively charged polyelectrolytes and negatively charged nanoparticles[12]Dthe synthesis of hollow spheres 100 nm or less in size has only recently become the subject of research activity. Several different routes， such as the self-assembly of block copolymers in a selective solvent，[13，14] the deposition of polyelectrolytes on a decomplexable or soluble core，[15，16] and microemulsion (as well as miniemulsion) polymerization，[17，18] have been developed to form hollow polymeric nanospheres. Although some of these methods have been quite successful， these strategies require the core templates to be removed in order to create a hollow interior， or need large quantities of surfactants to form nanosized micelles. Furthermore， although the majority of the proposed applications of hollow nano- spheres or nanocapsules are concentrated in the biomedical field， most of the hollow polymeric spheres described to date are ill-suited for such purposes. Therefore， materials (in par- ticular for the surfaces of the hollow nanospheres) that are biocompatible， non-toxic， and sometimes also biodegradable， are highly desirable. Herein， we demonstrate a simple and di- rect method for fabricating hollow polymeric nanospheres with biocompatible and biodegradable macromolecules. In this approach， hollow polymeric nanospheres were formed in a completely aqueous system without the aid of surfactants，展開(kāi)

請(qǐng)教高手這段話怎么翻譯: Therefore， combining the results from the SEM， EDS， and XRD pattern， the phase composition of GWZM852 alloy could be inferred to include an a-Mg matrix and large block-shaped Mg12Zn(Y，Gd) phases distributed in a discontinuous network wi... Therefore， combining the results from the SEM， EDS， and XRD pattern， the phase composition of GWZM852 alloy could be inferred to include an a-Mg matrix and large block-shaped Mg12Zn(Y，Gd) phases distributed in a discontinuous network with some small block- and rod-shaped eutectic phases scattered at the edge of the Mg12Zn(Y， Gd) phases. 展開(kāi)

求這段話的中文翻譯: The dispersibility of the grafted nanoparticles was characterized by the time dependence of the sedimentation height of the particles in toluene. 求翻譯，用機(jī)器翻譯的就算了~~

幫我翻譯這段話，急需。有關(guān)石堿: 石堿，出山東濟(jì)寧諸處。彼人采蒿蓼之屬，開(kāi)窖浸水，漉起，曬干燒灰，以原水淋汁，每百引入粉面二、三斤，久則凝淀如石，連汁貨之四方，浣衣發(fā)面，甚獲利也。他處以灶灰淋濃汁，亦去垢發(fā)面。

誰(shuí)可以幫我翻譯下這段話成英語(yǔ)，急用，求英語(yǔ)高手: 本文簡(jiǎn)述了國(guó)內(nèi)外有關(guān)大氣生物氣溶膠的研究現(xiàn)狀及其展望。主要圍繞生物氣溶膠的研究意義，生物氣溶膠的研究歷史，生物氣溶膠的種類及來(lái)源，生物氣溶膠的濃度及粒徑分布特征，生物氣溶膠采樣技術(shù)與檢測(cè)，以及對(duì)生物氣溶膠未來(lái)發(fā)展的展望等六個(gè)方面進(jìn)行了闡述。... 本文簡(jiǎn)述了國(guó)內(nèi)外有關(guān)大氣生物氣溶膠的研究現(xiàn)狀及其展望。主要圍繞生物氣溶膠的研究意義，生物氣溶膠的研究歷史，生物氣溶膠的種類及來(lái)源，生物氣溶膠的濃度及粒徑分布特征，生物氣溶膠采樣技術(shù)與檢測(cè)，以及對(duì)生物氣溶膠未來(lái)發(fā)展的展望等六個(gè)方面進(jìn)行了闡述。ZD介紹生物氣溶膠的分布特征。展開(kāi)

Determine the weight per milliliter by dividing the weight in g，化工上的求翻譯: Determine the weight per milliliter by dividing the weight in g， of the quantity of liquid， which fills the pycnometer at 25°C， by the capacity expressed in ml， of the pycnometer at the same temperature.

求翻譯。。。。。。。。。。。: During the preparation of the nano-products， these nano-units， such as nanoparticles， nanoclusters， nanowires and nanorods， can also self-assemble into the novel structural aggregates by several routes， including electron irradiation deposi... During the preparation of the nano-products， these nano-units， such as nanoparticles， nanoclusters， nanowires and nanorods， can also self-assemble into the novel structural aggregates by several routes， including electron irradiation deposition [19]， chemical vapor deposition [20]， laser vaporization-condensation [21]， charge transferring [22]， an organic reagent-assisted method [23]， solution-liquid-solid method [24] and catalytic vapor-liquid-solid growth [25]. With these routes， various nanoscale or microscale aggregates can demonstrate novel architectures， including tree-like， web-like， spherical， nanowire-like， network and fishbone-like aggregates. As a well-known method for producing the nanocapsules， however， arc-discharge has been rarely used to synthesize the aggregates self-assembled by the nanocapsules prepared simultaneously in arc-discharge. Nevertheless， it is possible that the arc-discharge can be developed into a new way to synthesize the aggregates. In the present work， we utilized arc-discharge technique with modified strategies， involving changing the hydrogen pressure， introducing gadolinium - aluminum alloy ingot as the anode and adjusting the elements percent of the anode according to their evaporation pressure， to synthesize a new type of nanocapsules， with intermetallic compound GdAl2 as core and amorphous Al2O3 as shell， which enlarge the family of the magnetic nanocapsules. At the same time， the regularly aligned three-dimensional macro-aggregates self-assembled by the nanocapsules without any template and catalyst were simultaneously synthesized in arc-discharge process. 展開(kāi)

幫忙翻譯化工文獻(xiàn) 在線等拒絕使用自動(dòng)翻譯: Nano-sized Beta zeolites， with a crystal size of 80–100 nm， were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acet... Nano-sized Beta zeolites， with a crystal size of 80–100 nm， were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acetic anhydride than theconventional zeolites of largeparticle size.The smallcrystalsize of nano-sized zeolitesmay bringon more accessible activesites and then enhance the catalytic activity. The exposed pore openings in nano-sized zeolites allow a fast desorption of heavy products from the catalyst and can then reduce the occupancy of active sites by the adsorption of products ，this can then alleviate the catalyst deactivation and improve the catalyst stability deactivation and improve the catalyst stability. 急用在線等拒絕用自動(dòng)翻譯因?yàn)檫@個(gè)誰(shuí)都會(huì) 如果有超級(jí)好用的自動(dòng)在線翻譯或軟件也可以推薦展開(kāi)

幫忙翻譯：機(jī)械加工設(shè)備的相關(guān)資料: 幫忙翻譯：機(jī)械加工設(shè)備的相關(guān)資料 SPINDLE HSK-A80/HSK-A63 Power Front bearing diameter A axis tilting angle C axis tilting angle Max torque TOOL CHANGE Standard features Rack type tool magazine capacity Max. tool length Max... 幫忙翻譯：機(jī)械加工設(shè)備的相關(guān)資料 SPINDLE HSK-A80/HSK-A63 Power Front bearing diameter A axis tilting angle C axis tilting angle Max torque TOOL CHANGE Standard features Rack type tool magazine capacity Max. tool length Max.tool weight Chip to chip tool changing time Max.tool diameter Adjacent tools max.diameter DRUM Drum dimensions Rotating drum indexing angle CHIPS CONVEYOR Scraper type Coolant system 1，500 liters tank with self-cleaning filter Releasing travel 800 Electrospindle curves Universal head rotating drum A-C axes 22，000 degrees/min HSK-A80/HSK-A63 展開(kāi)

幫忙翻譯下化工的英語(yǔ)。。用在線詞典翻譯部正確: A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase， in which the... A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase， in which the concentration of ion-pairing reagent， mobile phase pH， and acetonitrile concentration were varied. The resolution of more than 30 oligosaccharide components was obtained， under optimized conditions， in an analysis time of less than 30 min. This represents the first RP-HPLC method that can separate a complex mixture of both small and large sulfated oligosaccharides in a single chromatographic step. The heparin-derived oligosaccharides， in this mixture， can also be separated under a second set of RP-HPIPC conditions using a volatile ion-pairing reagent， tributylammonium acetate， to aid in the recovery of individual sulfated oligosaccharides. Moreover， it was possible to replace sodium chloride gradient， required for eluting highly sulfated oligosaccharides， with a fixed， low concentration of a volatile salt， ammonium acetate， by utilizing an acetonitrile gradient. This solvent system might make it possible to directly interface this RP-HPIPC separation with mass spectral analysis. ??2003 Elsevier B.V. All rights reserved. Keywords: Ion-pairing reagents; Gradient elution; Oligosaccharides 展開(kāi)

求化學(xué)翻譯: Graphite powder (<20m)， hydrazine， ammonia， N，Ndimethylformamide (DMF)， dopamine， 0.01M phosphate buffered saline (PBS; 0.138M NaCl， 0.0027M KCl， pH 7.4)， and ascorbic acid were purchased form Aldrich and used as received. Doubly disti... Graphite powder (<20m)， hydrazine， ammonia， N，Ndimethylformamide (DMF)， dopamine， 0.01M phosphate buffered saline (PBS; 0.138M NaCl， 0.0027M KCl， pH 7.4)， and ascorbic acid were purchased form Aldrich and used as received. Doubly distilled water was used throughout the whole experiments. The data of cyclic voltammetry (CV)， differential pulse voltammetry (DPV)， and electrochemical impedance spectra were obtained with a CHI 660 electrochemical workstation (CH instruments， Austin， TX). The electrochemical cell consisted of GCE (3mm diameter， Bioanalytical Systems， Inc.) as working electrode， Ag/AgCl (Bioanalytical Systems， Inc.) as reference electrode， and platinum wire as counter electrode. The impedance data were fitted to an appropriate equivalent circuit using ZsimpWin 3.0 software (Echem Software). The Raman spectra of graphene were obtained by micro-Raman system equipped with a homemade sample stage， a monochromator (SPEX 500 M)， and a CCD camera (Roger Scientific model 7346-001) with 514.5nm wavelength laser line. Graphene was characterized by field emission scanning electron microscope (SUPRA 55VP， Carl Zeiss) and atomic force microscope (NanostationII， Surface Imaging Systems). 展開(kāi)

文獻(xiàn)求翻譯: Since the formation of a titanacyclopropane en route to cyclopropylamines can only occur with alkylmagnesium halides that contain a b-hydrogen atom， Grignard reagents without b-hydrogens appeared to be the most promising reagents for th... Since the formation of a titanacyclopropane en route to cyclopropylamines can only occur with alkylmagnesium halides that contain a b-hydrogen atom， Grignard reagents without b-hydrogens appeared to be the most promising reagents for the synthesis of primary tert-alkylamines from nitriles (Scheme 1). Thus propionitrile (1a)， phenylmagnesium bromide (2) and Ti(Oi-Pr)4 were chosen to optimize the reaction conditions. In the protocol for the synthesis of cyclopropylamines，10 Ti(Oi-Pr)4 is already present in the diethyl ether solution of a nitrile， before two equivalents of the Grignard reagent are added. As this did not appear to be optimal for the synthesis of primary tertalkylamines， the Grignard reagent was added before Ti(Oi-Pr)4. With 2 equivalents of PhMgBr， 0.1 equivalent of Ti(Oi-Pr)4， and 1 equivalent of propionitrile (1a)， the primary tert-alkylamine 8a was not formed at all. With an equimolar quantity of Ti(Oi-Pr)4， the amine 8a was produced in a low yield (11%) but with 1 equivalent of Ti(Oi- Pr)4 and 3 equivalents of the Grignard reagent 2， a 60% yield of 8a was obtained. Monitoring of the reaction by workup of aliquots of the reaction mixture showed that the first addition of 2 to form the N-magnesio derivative of the corresponding imine was rapid， whereas the subsequent second addition of the Grignard reagent 2 required heating under reflux for up to 24 hours. In tetrahydrofuran instead of diethyl ether， the amine 8a was formed in a very low yield， if at all. 展開(kāi)

求韓語(yǔ)翻譯: 3? ??然 ?? ?? ???? ? ?? ???? ??? ?? ??? ?? &... 3? ??然 ?? ?? ???? ? ?? ???? ??? ?? ??? ?? ??? ?? ??? ?? ????、求準(zhǔn)確翻譯 PS 3元催化劑是安裝在汽車排氣管上的展開(kāi)

求翻譯文獻(xiàn): Anionsarecommonlyfoundintheenvironmentandbiologicalsystems.Forinstance，fluorideiswidelyusedindentalcareapplicationsandexhibitsinhibitionofcertainenzymefunctions.1Inadditi... Anions are commonly found in the environment and biological systems. For instance， fluoride is widely used in dental care applications and exhibits inhibition of certain enzyme functions.1 In addition to playing a central role in biological regulation， chloride is also a major groundwater contaminant that can corrode steel and concrete.2 Thyroid hormone synthesis largely determines iodine content.3 Acetate is a possible tracer for malignancies and has been extensively investigated in prostate cancer and its metastases.4 Phosphate ion is biologically and environmentally significant.5 Cyanide exerts adverse effects on human health as well as environment at low concentrations. Determining anions concentration is thus of primary concern in many areas， including food processing， industry， and clinic analysis.6 However， hydrophilic anions， such as F- and Cl-， form strong hydrogen bonds with protic solvents. Therefore， developing fluorescent probes based on electrostatic interactions for anions functioning in polar protic solvents is both challenging and currently infeasible. 展開(kāi)

繼續(xù)求翻譯: Ethylacetate(Quimis，p.a.)，methanol(Quimis，p.a.)，sec-butanol(Merck，HPLCgrade)，oleicacid(Merck，extrapure)，hydrogenperoxide(Interox，70%，w/waqueoussolution)，aluminumoxideforc... Ethyl acetate (Quimis， p.a.)， methanol (Quimis， p.a.)， sec- butanol (Merck， HPLC grade)， oleic acid (Merck， extra pure)， hydrogen peroxide (Interox， 70%， w/w aqueous solution)， aluminum oxide for chromatography (Fluka， 0.05–0.15 mm)， aluminum oxide for column chromatography (Acros Organics， activated， acidic， 0.1–0.5 mm)， aluminum tri-sec-butoxide (Aldrich， 99.99%)， oxalic acid (Synth， p.a.)， di-n-butyl ether (Fluka， >99%) and soybean oil (Cargill) were used as received. The solution of anhydrous hydrogen peroxide (24%， w/w) in ethyl acetate was prepared from aqueous H2O2 (70%， w/w) in ethyl acetate by azeotropic distillation with a Dean-Stark apparatus [14] The products were identified by gas chromatography–mass spectroscopy (GC–MS) using a Hewlett-Packard 5890 gas chromatograph equipped with a AT-Wax column and interfaced with a Hewlett-Packard 5971A mass spectrometer. Helium was used as the carrier gas. A similarly equipped Hewlett-Packard5890 gas chromatograph using nitrogen as the carrier gas and a flame ionization detector was used for product quantification， with the help of calibration curves. 展開(kāi)

高分求高手翻譯，不要機(jī)械翻譯: Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials，because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review fo... Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials，because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review focuses on the recent research advances in bimetallic DENs with respect to their synthesis，characterization，and applications as catalysts.Bimetallic DENs can be made mainly via three routes:co-complexation，sequential loading，and partial displacement.The research in bimetallic DENs has been significantly promoted by the advancement of characterization instruments.The performances of bimetallic DENs as homogeneous and heterogeneous catalysts in organic synthesis have been compared with both monometallic DENs and their physical mixtures.It is concluded that the synergistic electronic effect in bimetallic nanoparticles enhances their catalytic activities. 能翻譯多少都可以的展開(kāi)

幫忙翻譯一下化工方面的單詞英語(yǔ): 堿值測(cè)定器試劑移液管錐形瓶酸式滴定管甲基黃溴甲酚綠混合指示劑鹽酸標(biāo)準(zhǔn)溶液摩爾/升酸式滴定管... 堿值測(cè)定器試劑移液管錐形瓶酸式滴定管甲基黃溴甲酚綠混合指示劑鹽酸標(biāo)準(zhǔn)溶液摩爾/升酸式滴定管展開(kāi)

請(qǐng)幫我翻譯下一這段話~是工業(yè)設(shè)備的~比較專業(yè)~謝謝·在線等: Impeller-Type Sampler For Flow Controlled Sampling (Proportional to Flow): The Impeller-Type Sampler is installed as an integral part of the pipeline. No outside power or control is required. This Impeller-Type Sampler for flow-controlled... Impeller-Type Sampler For Flow Controlled Sampling (Proportional to Flow): The Impeller-Type Sampler is installed as an integral part of the pipeline. No outside power or control is required. This Impeller-Type Sampler for flow-controlled sampling features an impeller-driven sampling probe and sample circulation return probe assembled to a blind flange and mounted on a tee-flanged outlet positioned inside pipeline. This system incorporates a rotary sampling valve， McFarland-Tritan， LLC sample volume regulator， inlet probe， return probe piping with shut-off valves and fluid pressure regulator. Rotary sampling valve and fluid-powered impeller control sampling frequency. Adjustable sample volume regulator， from 0 to 2.5 cubic centimeters controls sample size. Rotary sampling valve alternately connects the volume regulator to the probe for filling or to the sample container for emptying. Rotary sample valve， sample volume regulator and probe arrangement are designed to permit passage of sand and BS&W through the sampler without clogging or damage. No check valves are required- eliminating the potential for cutting or plugging. This fluid sampling system will mount on blind flange without tee or on existing pipelines by addition of a saddle， flanged outlet and hot tap. A 24-inch sampler is provided for lines above 24 inches-customer should advise dimension from center of pipeline to face of the sampler-mounting flange. The Impeller-Type Sampler can be supplied mounted on flanged side outlet of a plain end tee， beveled for welding into the pipeline. Flange size and pressure rating are matched to line requirements. Sample volume regulator capacity: 0 to 10 cubic centimeters. Special volume regulators available for large sample sizes. Accessories include sample container， sheet-metal house， companion flanges， and studs and gasket. Fluid flow provides the power and controls the sampling rate. Changes in the sampling rate are directly proportional to changes in the flow rate in the pipeline. Installed in horizontal or vertical lines in accordance with API sampling standards. 展開(kāi)

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