需要一篇英語科技小文章大約1000詞左右,不用翻譯,謝了
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Z好是關(guān)于博弈論或者是基因工程納米技術(shù)方面的
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- 冷弒你妹憑衷45 2018-05-15 13:47:07
- From size, it usually generate significant changes in chemical and physical properties of small particle size in 0.1 microns (note 1 m = 100 centimeters, 1 centimeter = 10,000 microns, 1 micron = 10 nanometers, 1 nano = 10 ella), namely below 100 nanometers. Therefore, particle size in 1 ~ 100 nanometer particles called ultra fime grain materials, is also a kind of nanometer materials. Nano metal material is the middle of 1980s, then the successful development of field contains nano semiconducting film, nano ceramic, nano CiXing materials and nano biomedical materials. Nanoscale structure material referred to as the nanometer material (nano material), is to show its structure unit size between 1 nano ~ 100 nanometer range between. Because of its size is close to electronic coherence length, and its nature because strong coherent brings the self-organization makes properties change greatly. And, its scale has come close to the wavelength of light, plus its surface with large special effect, thus its display properties, such as melting point, magnetic, optical, heat conductivity, conductive properties etc, often is different from the substance in overall state behavior of nature. Nanoparticles material called utrasmall particle materials from the nanoparticles (nano distinguish) composition. Nanoparticles also called utrasmall particle size, generally means within 1 ~ 100nm between particles, is in atom clusters and macro objects at the junction of the transition region, from the macro and micro usually on the viewpoint, this system not only atypical microscopic system also atypical macroscopic systems, is a kind of typical mesoscopic system, has the surface effect, small size effect and the macroscopic quantum tunneling effect. When people put the macro object subdivided into utrasmall particle (nanometer level), it will display a lot of exotic characteristics, namely its optical, heat, electricity, magnetic, mechanical and chemical properties of solid and bulky than when there will be significant different.Nanotechnology generalized range including nano materials technology and nano machining technology, nano measurement technology, nano application technology, etc. One nanometer material technology focuses on nano functional material production (superfine powder, coating, nano modified materials etc), performance testing technology (chemical composition, microstructure and surface morphology and geophysical, geochemical and electric, magnetic and optical properties, such as heat and). Nano machining technology contains precision machining technology (energy beam machining, etc) and scanning probe techniques. Nanomaterials has certain uniqueness, when matter scale small to certain degree, then have to switch to quantum mechanics to replace traditional mechanical view to describe its behavior, when powder particles size by 10 micron drop to 10 nano, its size is changed for 1,000 times, but converted volume is ten nine 4k times the giant, so both behavior will generate obvious difference. Nanoparticles are different from large physical reason is in the surface area of the relative increase, namely utrasmall particle surface was full of ladder shape structure, the structure with high surface can represent the unrest atoms. This kind of atomic extremely easily with foreign atomic adsorption of bonding, at the same time because narrow particle size and provides large surface activity of atoms. It is melting point, nano powder due to each particle constituent atoms less, surface atomic in instability, make its surface lattice vibration amplitude of the bigger, so has the high surface energy, causing utrasmall particle unique thermal property, also is caused by melting down, as nano powder will than traditional powder easy in low temperature sintering and become good sintering promote materials 從尺寸大小來說,通常產(chǎn)生物理化學(xué)性質(zhì)顯著變化的細(xì)小微粒的尺寸在0.1微米以下(注1米=100厘米,1厘米=10000微米,1微米=1000納米,1納米=10埃),即100納米以下。因此,顆粒尺寸在1~100納米的微粒稱為超微粒材料,也是一種納米材料。 納米金屬材料是20世紀(jì)80年代中期研制成功的,后來相繼問世的有納米半導(dǎo)體薄膜、納米陶瓷、納米瓷性材料和納米生物醫(yī)學(xué)材料等。 納米級結(jié)構(gòu)材料簡稱為納米材料(nano material),是指其結(jié)構(gòu)單元的尺寸介于1納米~100納米范圍之間。由于它的尺寸已經(jīng)接近電子的相干長度,它的性質(zhì)因為強相干所帶來的自組織使得性質(zhì)發(fā)生很大變化。并且,其尺度已接近光的波長,加上其具有大表面的特殊效應(yīng),因此其所表現(xiàn)的特性,例如熔點、磁性、光學(xué)、導(dǎo)熱、導(dǎo)電特性等等,往往不同于該物質(zhì)在整體狀態(tài)時所表現(xiàn)的性質(zhì)。 納米顆粒材料又稱為超微顆粒材料,由納米粒子(nano particle)組成。納米粒子也叫超微顆粒,一般是指尺寸在1~100nm間的粒子,是處在原子簇和宏觀物體交界的過渡區(qū)域,從通常的關(guān)于微觀和宏觀的觀點看,這樣的系統(tǒng)既非典型的微觀系統(tǒng)亦非典型的宏觀系統(tǒng),是一種典型的介觀系統(tǒng),它具有表面效應(yīng)、小尺寸效應(yīng)和宏觀量子隧道效應(yīng)。當(dāng)人們將宏觀物體細(xì)分成超微顆粒(納米級)后,它將顯示出許多奇異的特性,即它的光學(xué)、熱學(xué)、電學(xué)、磁學(xué)、力學(xué)以及化學(xué)方面的性質(zhì)和大塊固體時相比將會有顯著的不同。 納米技術(shù)的廣義范圍可包括納米材料技術(shù)及納米加工技術(shù)、納米測量技術(shù)、納米應(yīng)用技術(shù)等方面。其中納米材料技術(shù)著重于納米功能性材料的生產(chǎn)(超微粉、鍍膜、納米改性材料等),性能檢測技術(shù)(化學(xué)組成、微結(jié)構(gòu)、表面形態(tài)、物、化、電、磁、熱及光學(xué)等性能)。納米加工技術(shù)包含精密加工技術(shù)(能量束加工等)及掃描探針技術(shù)。 納米材料具有一定的獨特性,當(dāng)物質(zhì)尺度小到一定程度時,則必須改用量子力學(xué)取代傳統(tǒng)力學(xué)的觀點來描述它的行為,當(dāng)粉末粒子尺寸由10微米降至10納米時,其粒徑雖改變?yōu)?000倍,但換算成體積時則將有10的9次方倍之巨,所以二者行為上將產(chǎn)生明顯的差異。 納米粒子異于大塊物質(zhì)的理由是在其表面積相對增大,也就是超微粒子的表面布滿了階梯狀結(jié)構(gòu),此結(jié)構(gòu)代表具有高表面能的不安定原子。這類原子極易與外來原子吸附鍵結(jié),同時因粒徑縮小而提供了大表面的活性原子。 就熔點來說,納米粉末中由于每一粒子組成原子少,表面原子處于不安定狀態(tài),使其表面晶格震動的振幅較大,所以具有較高的表面能量,造成超微粒子特有的熱性質(zhì),也就是造成熔點下降,同時納米粉末將比傳統(tǒng)粉末容易在較低溫度燒結(jié),而成為良好的燒結(jié)促進(jìn)材料。 一般常見的磁性物質(zhì)均屬多磁區(qū)之集合體,當(dāng)粒子尺寸小至無法區(qū)分出其磁區(qū)時,即形成單磁區(qū)之磁性物質(zhì)。因此磁性材料制作成超微粒子或薄膜時,將成為優(yōu)異的磁性材料。 納米粒子的粒徑(10納米~100納米)小于光波的長,因此將與入射光產(chǎn)生復(fù)雜的交互作用。金屬在適當(dāng)?shù)恼舭l(fā)沉積條件下,可得到易吸收光的黑色金屬超微粒子,稱為金屬黑,這與金屬在真空鍍膜形成高反射率光澤面成強烈對比。納米材料因其光吸收率大的特色,可應(yīng)用于紅外線感測器材料。 納米技術(shù)在世界各國尚處于萌芽階段,美、日、德等少數(shù)國家,雖然已經(jīng)初具基礎(chǔ),但是尚在研究之中,新理論和技術(shù)的出現(xiàn)仍然方興未艾。我國已努力趕上先進(jìn)國家水平,研究隊伍也在日漸壯大。
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- 需要一篇英語科技小文章大約1000詞左右,不用翻譯,謝了
- Z好是關(guān)于博弈論或者是基因工程納米技術(shù)方面的
2018-05-14 20:22:11
409
1
- 關(guān)于納米技術(shù)的文章一篇,謝謝了
2012-01-17 19:25:45
468
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- 哪位英語高手幫幫忙,翻譯英語文章!謝謝1
- 英語高手,謝謝了!ThecatalystsupportwasimpregnatedwithacetonesolutionofRuCl3.nH2Ouptorutheniumcontentof4w%,understirringfor6h.Afterconcentrationinarotaryevaporator,theobt... 英語高手,謝謝了! The catalyst support was impregnated with acetone solution of RuCl3.nH2O up to ruthenium content of 4 w%, under stirring for 6 h. After concentration in a rotary evaporator, the obtained material was dried in air at 383 K overnight and subjected to preliminary reduction with a 1N2/3H2 stream at 698 K, and then cooled in 1N2/3H2 atmosphere. The potassium promoter was introduced by incipient wet impregnation with KNO3 solution at room temperature with molar ratio of K+ /Ru = 5/1. After stirring for 6 h and infusing for 24 h, the samples were dried in a rotary evaporator at 343K and then dried in the air at 383K for 12 h. The ammonia synthesis activities of the catalysts with about 35-60 meshes were evaluated by 1N2/3H2 flow of 2100 mL/h at 0.2 MPa from 623 K to 773 K. The amount of effluent ammonia was determined by titration method. As we can see from the Table 1, under the same reaction conditions, the catalyst K-Ru/Mg(Al)O exhibited the highest activity, 38.42 mL NH3?h-1?g-1 at 673K, 3 times more active than K-Ru/MgO, 12.88 mL NH3?h-1?g-1 at 748K. This means that selection of supports takes great effects on the activity of catalysts. The ammonia synthesis activity of different supports are K-Ru/Mg(Al)O > K-Ru/Mg-Al-Ca(1) > K-Ru/Mg-Al-Ca(2) > K-Ru/Al2O3 > K-Ru/CaO > K-Ru/MgO. The combinatorial supports showed higher activity than single supports. However, the sequence of temperature corresponding to the highest activity is just opposite to that of the activity. The optimal temperature for K-Ru/Mg(Al)O, 673K, is the lowest of all, on the contrary, that of K-Ru/MgO is the highest, 748K. The Mg(Al)O has a larger surface area of 140.95 m2?g-1 , similar to γ-Al2O3, 110-180 m2?g-1 . The other two combinational supports have little surface areas but higher activities than Al2O3. It suggested that the activity of the catalyst is influenced not only by the dispersion of Ru crystals but also by the crystal structure of the supports. Table 1 Ammonia synthesis activities and BET surface areas Catalyst Optimal activity Highest activity Surface area of support temperature(K) (NH3/mL?h-1?g-1) (m2?g-1) K-Ru/MgO 748 12.88 K-Ru/Al2O3 698 23.79 K-Ru/CaO 723 23.22 K-Ru/Mg(Al)O 673 38.42 140.95 K-Ru/Mg-Al-Ca(1) 698 30.75 29.10 K-Ru/Mg-Al-Ca(2) 698 26.12 14.69 Acknowledgments This work was supported by the NNSF of China (20273053, 20023001 and 29933040), the 973 Programming (001CB108906) and the NSF of Fujian province (E0310001). References 1. C. J. H. Jacobsen, S. Dahl, P. L. Hansen et al., J. Mol. Catal. A, 2000, 163, 19. 2. F. Cavani, F. Trifiro, A. Vaccari, Catal. Today, 1991, 11, 173. 展開
2018-11-14 18:00:49
318
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- 幫忙翻譯一哈文章(翻譯成英語)
- 摘 要 本文采用環(huán)氧氯丙烷、乙二胺、對氨基苯磺酸等物質(zhì)合成了一種新的活性染料耐氯水牢度提升劑,并對經(jīng)多種類型活性染料染色的織物進(jìn)行固色處理,再進(jìn)行氯漂處理。經(jīng)過對織物K/S值、Z大吸收波長λmax、摩擦牢度及皂洗牢度的分析,確定提升劑處理的Z佳工... 摘 要 本文采用環(huán)氧氯丙烷、乙二胺、對氨基苯磺酸等物質(zhì)合成了一種新的活性染料耐氯水牢度提升劑,并對經(jīng)多種類型活性染料染色的織物進(jìn)行固色處理,再進(jìn)行氯漂處理。經(jīng)過對織物K/S值、Z大吸收波長λmax、摩擦牢度及皂洗牢度的分析,確定提升劑處理的Z佳工藝。實驗表明:織物的K/S值有很大的提高,織物的耐氯牢度大致可提升2~3級,并且不會改變織物色光。但是提升劑對色織物的摩擦牢度和皂洗牢度影響不是很大。 關(guān)鍵詞:活性染料;耐氯色牢度;提升劑;染色工藝 展開
2008-05-28 14:59:35
501
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- 文章繼續(xù)求翻譯1,生物/英語達(dá)人來幫忙!
- Residues of malachite green (MG) were extracted from homogenized animal tissues with a mixture of McIlvaine buffer (pH 3.0)–acetonitrile, and purified over an aromatic sulfonic acid solid-phase extraction column followed by ... Residues of malachite green (MG) were extracted from homogenized animal tissues with a mixture of McIlvaine buffer (pH 3.0)–acetonitrile, and purified over an aromatic sulfonic acid solid-phase extraction column followed by HPLC or LC–ESI-MS–MS analysis. Ascorbic acid and N,N,N9,N9-tetramethyl-1,4-phenylenediamine dihydrochloride were added to reduce de-methylation of the dye. Responses were recorded at 620 nm (HPLC) or by multiple-reaction-monitoring (LC–MS–MS) after post-column oxidation using PbO2 . MG and its primary metabolite leuco-malachite green (LMG) were successfully determined at 2.5–2000 mg / kg in catfish, eel, rainbow trout, salmon, tropical prawns and turbot, with a limit of detection at 1 mg / kg (HPLC) and 0.2 mg / kg (LC–MS–MS) for both MG and LMG. Recoveries for LMG were between 86±15% (prawn) and 105±14% (eel). Freeze–thawing cycles, and storage at 4°C and -20°C affected the recovery of both MG and LMG. Analyses of eel, trout and (processed) salmon field samples collected at local retailers, fish-market and -shops demonstrated trace levels of MG-residues. A McIlvaine solution at pH 3.0 was prepared by mixing 18.9 ml 0.2 M sodium hydrogen phosphate and 81.1 ml 0.1 M citric acid, whereas these volumes were 62.5 and 37.5 ml, respectively, to obtain a McIlvaine solution at pH 6.0. The SPE-eluent was prepared just before use and consisted of a mixture of 2.5 ml 25% (m/v) ammonium hydroxide, 2.5 ml 1.0 mg/ml methanolic ascorbic acid and 45 ml methanol. The sample-solvent was composed, just before use, from 2.5 ml 1.0 mg/ml methanolic ascorbic acid, 20 ml 50 mM sodium perchlorate containing 25 mM sodium acetate and 25 mM 1-pentanesulfonic acid adjusted to pH 4.0 with acetic acid, and 27.5 ml acetonitrile. Chemicals and solutions containing the dyes were protected from light. Fish were bought at the fish market and local stores. Blank trout were collected from aquaria at Utrecht University (The Netherlands). Tropical prawns were collected by the Dutch Inspectorate for Health Protection and Veterinary Public Health. 展開
2008-03-26 21:06:11
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- 急求英語達(dá)人幫忙翻譯段文章,在線等謝謝
- The incorporation of silicon from the quartz-made growth chamber, characteristic of NIRIM-type reactor is insignificant in our samples, if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here), wh... The incorporation of silicon from the quartz-made growth chamber, characteristic of NIRIM-type reactor is insignificant in our samples, if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here), which supports the good quality of these films. The improvement of the crystalline quality of {111} films is explained by the weak ion bombardment of the sample during its growth outside the plasma ball. Raman measurements (not shown in this work) have also confirmed the high crystalline quality of our films, in particular in the low doping range. Very high boron concentrations (up to 5×1021 cm?3) have been reached at this growth position, outside the plasma ball. 展開
2010-03-12 07:46:42
480
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- 麻煩哪位英語牛人幫忙翻譯下~~藥學(xué)的 翻譯成英語 謝謝了
- 目的 制備足浴液并對其進(jìn)行質(zhì)量考察。方法 采用正交試驗優(yōu)選苦參中苦參堿和紫草中紫草素的提取工藝,通過紫外分光光度法對苦參堿與紫草素的含量進(jìn)行測定,并將苦參堿、紫草素、水楊酸、苯甲酸和硼酸按一定比例進(jìn)行溶解實驗?;瘜W(xué)成分分析采用薄層色譜法及試管... 目的 制備足浴液并對其進(jìn)行質(zhì)量考察。方法 采用正交試驗優(yōu)選苦參中苦參堿和紫草中紫草素的提取工藝,通過紫外分光光度法對苦參堿與紫草素的含量進(jìn)行測定,并將苦參堿、紫草素、水楊酸、苯甲酸和硼酸按一定比例進(jìn)行溶解實驗?;瘜W(xué)成分分析采用薄層色譜法及試管實驗法對苦參中苦參堿與紫草中紫草素進(jìn)行化學(xué)成分檢測。結(jié)果 通過薄層色譜法和試管實驗法得出苦參堿為生物堿、紫草素為蒽醌。通過正交試驗和紫外分光光度法選出Z優(yōu)提取方案。通過溶解實驗使中化學(xué)藥物形成混懸液,Z后得到足浴液樣品。結(jié)論 通過T濃度實驗,溶解實驗選用95%乙醇為溶媒。通過L9(33)正交實驗確定Z佳提取工藝,即提取時間為30min,溫度為60℃,乙醇濃度為60%,以苦參堿作對照品,用分光光度法測定其苦參堿得率3.07%。經(jīng)過實驗摸索,得到超聲提取紫草工藝的Z佳條件,即乙醇濃度為70%,超聲功率為400w,料液比為1:40時提取率較高。足浴液制備方法簡便,有利于實際生產(chǎn),降低能源、節(jié)約時間,有較大的開發(fā)利用價值和廣泛的市場前景。 關(guān)鍵字:紫草;苦參;正交設(shè)計;薄層色譜 展開
2008-06-07 10:30:31
591
1
- 英語課文翻譯
- Ifyouhadtochoosethesinglemostimportantdiscoveryofthe20thcentury,youwouldhavearealdilemmaonyourhands.Injust100years,theworldchangedcompletely.Amazingdiscoveriesweremadeinm... If you had to choose the single most important discovery of the 20th century, you would have a real dilemma on your hands. In just 100 years, the world changed completely. Amazing discoveries were made in medicine, communications and transport, not to mention our knowledge of the world and space . Medical advances ranged from discovering the causes of diseased under microscopes to surgical procedures replacing diseased organs with donated ones.Communications changed with the introduction of mobile phones and the way we correspond went from writing letters to emailing. We started flying around the world and meanwhile, scientists figured out how to spilt the atom, previously thought to be the smallest particle of matter in the universe. Although it is impossible to choose the most important discovery, it is possible to single out a few pioneers of the 20th century.Here are five of them. 展開
2012-02-02 01:10:54
560
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- 漢譯英,科技英語
- 目前,我公司正在推廣的其他技術(shù)還包括膠原蛋白纖維技術(shù)、天然染料提取及應(yīng)用技術(shù)和小型拉曼光譜檢測儀技術(shù)。更多具有廣闊市場應(yīng)用前景的高新技術(shù),如固質(zhì)燃料節(jié)能增效技術(shù)、蛋白質(zhì)DNA檢測技術(shù)、生物蛋白質(zhì)化妝品技術(shù)、新型太陽能光伏轉(zhuǎn)化技術(shù)、納米玻璃技術(shù)等... 目前,我公司正在推廣的其他技術(shù)還包括膠原蛋白纖維技術(shù)、天然染料提取及應(yīng)用技術(shù)和小型拉曼光譜檢測儀技術(shù)。更多具有廣闊市場應(yīng)用前景的高新技術(shù),如固質(zhì)燃料節(jié)能增效技術(shù)、蛋白質(zhì)DNA檢測技術(shù)、生物蛋白質(zhì)化妝品技術(shù)、新型太陽能光伏轉(zhuǎn)化技術(shù)、納米玻璃技術(shù)等正在研發(fā)當(dāng)中。 展開
2009-07-29 00:27:07
343
3
- 英語請人工翻譯,
- DARPA has been at the forefront of the aggressive FCS initiative. We are conducting demonstrations of advanced prototypes, including unmanned ground reconnaissance and attack platforms; low-cost tactical precision munitions; small UAVs t... DARPA has been at the forefront of the aggressive FCS initiative. We are conducting demonstrations of advanced prototypes, including unmanned ground reconnaissance and attack platforms; low-cost tactical precision munitions; small UAVs that support operations in urban and mountainous environments; and sensors that can detect vehicles camouflaged under dense foliage. A Defense Acquisition Board scheduled for May could allow FCS to enter System Development and Demonstration under Army management this year. This will enable the Army to field an FCS Unit for operational testing in FY 2008, with the first Unit of Action ready for operational deployment by 2010. DARPA is also conducting three unmanned air combatant programs: the Unmanned Combat Air Vehicle (UCAV) with the Air Force, UCAV-N with the Page 5 of 14 Navy, and the Unmanned Combat Armed Rotorcraft program with the Army. These aircraft will be teamed with manned systems on the ground and in the air to transform how the Air Force suppresses enemy air defenses, how the Navy suppresses enemy air defenses and conducts extended surveillance, and how the Army conducts armed reconnaissance and attack. 展開
2007-05-25 06:53:13
464
6
- 幫忙翻譯一段英語
- Plant material and culture conditions have been described (7). Briefly, a diploid tissue culture line, WOO1C, of wild carrot, Daucus carota L., was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2,4-dichlorophenoxy... Plant material and culture conditions have been described (7). Briefly, a diploid tissue culture line, WOO1C, of wild carrot, Daucus carota L., was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2,4-dichlorophenoxyacetic acid (2,4-D). To regenerate plants from the culture, callus tissue was transferred to the same medium devoid of 2,4-D (embryogenic medium). All experiments were performed with cultures grown in liquid medium. For convenience, cultures grown in 2,4-D-containing medium are referred to as "callus cultures", and those grown in medium without 2,4-D as "embryo cultures." The growth of callus cultures was measured by the sidearmturbidity method (7). The number of cells at any time point of growth was estimated from turbidity in a Klett-Summerson calorimeter and was expressed in arbitrary units. For example, Klett 100 corresponds to ="2 X 106 cells per ml. The relationship is linear up to Klett 150 in our Klett-Summerson colorimeter. Suspension cultures ofWOOLC cell line are normally maintained at cell densities between 106 and 107 cells per ml in 0.1 mg of 2,4-D per liter (high-density culture) in shake flasks. During a quantitative study on embryogenesis, we found that maximal embryo production can be achieved by first incubating the culture at high density in medium without 2,4-D for one generation time and then diluting it to 2-3 x 104 cells per ml (low-density culture). To compare cultures of comparable density, callus cultures and embryo cultures were subjected to the same procedure. To initiate low-density embryo or callus cultures, an 8-day-old high-density culture grown at the logarithmic phase was washed three times with fresh callus or embryogenic medium and resuspended at 8 x 105 cells per ml for one generation (3 days) in its corresponding medium. It was then diluted to 2 x 104 cells per ml; 20 ml of the culture was incubated in a plastic Petri dish (9 cm in diameter) at 240C. The morphogenetic events of the cultures were examined and photographed under a dissecting microscope. 請不要用google的那個,我看不懂~~ 展開
2008-02-19 03:32:04
529
2
- 高分求一篇labview 溫度控制 中英對照的文章!
- 求一篇3000-5000字的labview溫度控制的文章,要中英文對照的,請發(fā)到我的郵箱中:19870311qq@163.com,謝謝了!??!... 求一篇3000-5000字的labview 溫度控制的文章,要中英文對照的,請發(fā)到我的郵箱中:19870311qq@163.com,謝謝了?。?! 展開
2009-05-18 19:01:37
379
2
- 找一篇介紹body language的英文文章
2018-05-17 01:05:33
381
1
- 求一篇血液中提取DNA的文章
- 我做的是牦牛血中提取DNA的實驗,加上凝膠電泳法測試。PCR擴增不屬于我畢業(yè)論文的范圍。請大家給篇有點相視的論文作為參考。
2009-05-18 09:58:59
372
1
- 求助一篇《貯煤場安全的文章》,謝謝
2012-12-13 20:20:14
419
1
- 誰能告我關(guān)于薄層色譜法的一篇外文文獻(xiàn),我要翻譯。謝謝了
2007-04-04 13:09:54
405
1
- 磁翻板液位計用英語怎么翻譯?
- 磁翻板液位計用英語怎么翻譯?有沒有專業(yè)一點的說法?
2014-03-13 09:15:39
1614
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- 單向加速度傳感器 英語怎么翻譯
2014-05-12 15:23:04
381
2
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