全部評(píng)論(4條)
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- k24sb37 2011-08-12 00:00:00
- Ho chi minh city, Vietnam fourth lane county 11 XieZhou street, number 120
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- 1192230731 2012-04-06 00:00:00
- 各位樓主都錯(cuò)了, 是"謝淵", 不是"謝洲", 而且應(yīng)該翻譯成: 120, Ta Uyen Street, ward 4, distric 11, HoChiMinh City, Vietnam
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- iulchjcl 2011-08-13 00:00:00
- No.120 Trân Quý Dường Phường 4 Quận 11 Ho chi minh city, Vietnam ----------------------------------------- 標(biāo)準(zhǔn)答案。當(dāng)然,11郡也可以寫(xiě)成11th District即英語(yǔ)11區(qū),越南郵局的人完全能懂。
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- izhh77 2011-08-12 00:00:00
- No. 120, Tran Quy Road, Ward 4, District 11, Ho Chi Minh City, Vitenam 第11郡(區(qū)),越南語(yǔ)為Quận 11 第4坊(亞區(qū)),越南語(yǔ)為Phường 4 謝洲,越南語(yǔ)為T(mén)rân Quý Dường 僅-供-參-考
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- 越南胡志明市第十一郡第四坊謝洲街120號(hào) 翻譯成英文,求幫忙...急急急....
2011-08-11 03:00:40
643
4
- 求翻譯成英文,非常感謝!
- 防塵測(cè)試:在砂塵<75μm砂塵箱中,灰塵濃度為:5g/m3,空氣流速為10m/s,試驗(yàn)持續(xù)8小時(shí)。機(jī)器內(nèi)部無(wú)砂塵進(jìn)入。防水測(cè)試:樣品被放置在淋雨試驗(yàn)箱轉(zhuǎn)臺(tái)上內(nèi)。向其噴灑溫度20℃的水。每... 防塵測(cè)試:在砂塵<75μm砂塵箱中,灰塵濃度為:5g/m3,空氣流速為10m/s,試驗(yàn)持續(xù)8小時(shí)。機(jī)器內(nèi)部無(wú)砂塵進(jìn)入。 防水測(cè)試:樣品被放置在淋雨試驗(yàn)箱轉(zhuǎn)臺(tái)上內(nèi)。向其噴灑溫度20℃的水。每個(gè)面噴灑10min。機(jī)器正常工作。 跌落測(cè)試:機(jī)器6個(gè)面分別150cm高度跌落在水泥地面。4個(gè)循環(huán)無(wú)故障。 液晶屏耐磨:推拉力計(jì)垂直按壓于屏表面,壓力2.4N,在3cm直線距離來(lái)回摩擦10000次。手寫(xiě)輸入,觸筆沿摩擦處劃直線,歪斜率不超過(guò)15%。 按鍵壽命:下壓重量為400-500g,按壓100萬(wàn)次按鍵無(wú)破損現(xiàn)象,按鍵功能正常。 振動(dòng)測(cè)試:掃頻耐久試驗(yàn)、定頻耐久試驗(yàn)、高頻掃頻耐久試驗(yàn)、高頻定頻耐久試驗(yàn)以后機(jī)器無(wú)故障。 溫度測(cè)試:工作溫度為-10℃,55℃、貯存溫度為-20℃,60℃、恒定濕熱試驗(yàn)環(huán)境溫度55℃,相對(duì)濕度93%、溫度變化試驗(yàn)機(jī)器無(wú)故障。 移動(dòng)終端事業(yè)部致力于研發(fā)、生產(chǎn)和銷(xiāo)售民族品牌的嵌入式信息終端,經(jīng)過(guò)多年不懈地努力,自有品牌手持終端產(chǎn)品大批量銷(xiāo)往國(guó)內(nèi)、國(guó)際市場(chǎng)。 金融與通信事業(yè)部致力于研發(fā)、生產(chǎn)和銷(xiāo)售金融類(lèi)產(chǎn)品,產(chǎn)品占據(jù)了國(guó)內(nèi)相當(dāng)大分額的市場(chǎng)。 SOC事業(yè)部致力于研發(fā)、設(shè)計(jì)集成電路產(chǎn)品,實(shí)現(xiàn)具有自己知識(shí)產(chǎn)權(quán)的集成電路。 說(shuō)明:以上組合為Z大兼容,只能裁減,不能增加;豎排并列為可以二選一。 售前服務(wù) 提供快速、詳細(xì)、周到的技術(shù)咨詢(xún),技術(shù)開(kāi)發(fā)支持。 具備完善的軟件開(kāi)發(fā)工具、硬件開(kāi)發(fā)手冊(cè)、文檔說(shuō)明和培訓(xùn)支持。 售后服務(wù) 提供快速優(yōu)質(zhì)的升級(jí)、維護(hù)、維修服務(wù),一般不超過(guò)三個(gè)工作日,并且可以提供及時(shí)的備機(jī)服務(wù),特殊約定的除外。 提供更長(zhǎng)的保修服務(wù),并且定期的回訪和維護(hù)服務(wù)。 本地化服務(wù)價(jià)格優(yōu)勢(shì)維修費(fèi)用低。 實(shí)時(shí)對(duì)裝備進(jìn)行“體驗(yàn)”、準(zhǔn)確及時(shí)地保障工作,確保了裝備保障工作人員全面、實(shí)時(shí)、直觀地了解裝備的技術(shù)狀況、消耗態(tài)勢(shì)和故障情況,并據(jù)此部署維護(hù)保養(yǎng)力量,排查安全隱患. 立體倉(cāng)庫(kù),數(shù)據(jù)采集比較困難,工作強(qiáng)度高 解決方案:零部件及包裝箱貼上條碼標(biāo)簽,使用AUTOID產(chǎn)品,讀取條碼,利用高級(jí)WIFI傳輸?shù)焦芾硐到y(tǒng) 好處:提高工作效率,形成快速、GX的物流環(huán)節(jié) 節(jié)約紙張成本 數(shù)據(jù)可靠性強(qiáng),出錯(cuò)率近乎為零 實(shí)現(xiàn)科學(xué)出入庫(kù),提高綜合管理水平 展開(kāi)
2011-02-28 05:16:20
671
1
- 牌匾翻譯成英文:香坊實(shí)驗(yàn)農(nóng)場(chǎng)社區(qū)衛(wèi)生服務(wù)站
- CommunityhealthservicestationofXiangfangexperimentalfarm百度翻譯是這樣的行么?... Community health service station of Xiangfang experimental farm 百度翻譯是這樣的 行么? 展開(kāi)
2015-11-24 01:53:02
414
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- 翻譯成英文
- 表面增強(qiáng)拉曼光譜(SERS)使得拉曼信號(hào)得以若干數(shù)量級(jí)的增強(qiáng),能在一定程度上降低熒光背景,很適合含水的生物體系的檢測(cè)。合適的增強(qiáng)基底對(duì)獲得優(yōu)質(zhì)的增強(qiáng)信號(hào)很重要。近年來(lái)在食品,生物,醫(yī)學(xué),環(huán)境等方面應(yīng)用廣泛 文章綜述了近幾年來(lái)表面增強(qiáng)拉曼光譜些應(yīng)用... 表面增強(qiáng)拉曼光譜(SERS)使得拉曼信號(hào)得以若干數(shù)量級(jí)的增強(qiáng),能在一定程度上降低熒光背景,很適合含水的生物體系的檢測(cè)。合適的增強(qiáng)基底對(duì)獲得優(yōu)質(zhì)的增強(qiáng)信號(hào)很重要。近年來(lái)在食品,生物,醫(yī)學(xué),環(huán)境等方面應(yīng)用廣泛 文章綜述了近幾年來(lái)表面增強(qiáng)拉曼光譜些應(yīng)用領(lǐng)域的研究進(jìn)展并對(duì)其應(yīng)用前景做了展望。 翻譯成英文 展開(kāi)
2012-05-04 05:19:02
450
4
- 發(fā)酵設(shè)備題,急急急急急?。?!幫忙解答
- 3.設(shè)計(jì)一年產(chǎn)20000噸味精(純度99.5%)的發(fā)酵工廠(年生產(chǎn)天數(shù)按330記),工藝數(shù)據(jù)如下: 提取率:97%,產(chǎn)酸率為11%,發(fā)酵罐發(fā)酵周期為32小時(shí),生產(chǎn)周期45小時(shí);接種量為7%,種子培養(yǎng)時(shí)間16小時(shí),生產(chǎn)周期為24小時(shí),染菌率按1%估計(jì)。請(qǐng)計(jì)算: (1)若選... 3.設(shè)計(jì)一年產(chǎn)20000噸味精(純度99.5%)的發(fā)酵工廠(年生產(chǎn)天數(shù)按330記),工藝數(shù)據(jù)如下: 提取率:97%,產(chǎn)酸率為11%,發(fā)酵罐發(fā)酵周期為32小時(shí),生產(chǎn)周期45小時(shí);接種量為7%,種子培養(yǎng)時(shí)間16小時(shí),生產(chǎn)周期為24小時(shí),染菌率按1%估計(jì)。請(qǐng)計(jì)算: (1)若選用公稱(chēng)容積為200M3發(fā)酵罐,發(fā)酵罐裝填系數(shù)75%,則發(fā)酵罐數(shù)量應(yīng)是多少?種子罐的公稱(chēng)容積和數(shù)量應(yīng)是多少? (2)發(fā)酵溫度為32oC,每1M3發(fā)酵液每小時(shí)傳給冷卻器的Z大傳熱量為4.18×6000KJ/(M3.h),采用豎式蛇管換熱器,K=4.18×500KJ/(M2.h.C),冷卻水由20oC升至27oC,假設(shè)產(chǎn)生的熱量全部傳給冷卻器,求單位時(shí)間內(nèi)冷卻水的用量及需要多大冷卻面積。 我的誤區(qū)如下: (1)發(fā)酵罐 N=nt/24+1 n為每24小時(shí)進(jìn)料罐數(shù) n是否應(yīng)為生產(chǎn)周期/24,而t為發(fā)酵周期,則 N=(45÷24)×32÷24+1=3.5 種子罐N=(24÷24)×16÷24+1=5/3 罐數(shù)怎么為分?jǐn)?shù)和小數(shù)? 而種子罐公稱(chēng)容積我就不會(huì)了,請(qǐng)告訴我一下。 (2)對(duì)于冷卻水耗量W=Q/C(T′-T) 但比熱C如何求? .現(xiàn)有30M3酵罐一臺(tái),實(shí)際容量20M3若料液(密度為1046kg/M3,比熱為3.94KJ/Kg)采用連消方式進(jìn)行滅菌,整個(gè)滅菌在1.5小時(shí)完成。 (1)請(qǐng)計(jì)算采用連消滅菌流程時(shí),120oC滅菌所需蒸汽用量及蒸汽管直徑?(蒸汽間接加熱,假設(shè)無(wú)熱量損失,蒸汽壓力表壓0.4MPa,該壓力下蒸汽的焓為2747.27KJ/Kg,蒸氣密度為2.62kg/M3,蒸汽在管道中的流速為42m/s,物料進(jìn)連消系統(tǒng)加熱器的溫度為70oC) 題中用的應(yīng)該是熱量的恒等計(jì)算 冷卻水耗量W=Q/C(T′-T)則Q=C(T′-T)×W 料液的溫差是120-70嗎?那蒸汽的溫差在哪? 展開(kāi)
2018-11-18 09:34:23
410
0
- 幫忙翻譯成英語(yǔ)
- 1.掌握量熱裝置的基本組合及電熱補(bǔ)償法測(cè)定熱效應(yīng)的基本原理2.用電熱補(bǔ)償法測(cè)定KNO3或KCL在不同濃度水溶液中的積分溶解熱3.用作圖法求KNO3或KCL在水中的微分沖淡,積分沖淡熱和微分溶... 1.掌握量熱裝置的基本組合及電熱補(bǔ)償法測(cè)定熱效應(yīng)的基本原理 2.用電熱補(bǔ)償法測(cè)定KNO3或KCL在不同濃度水溶液中的積分溶解熱 3.用作圖法求KNO3或KCL在水中的微分沖淡,積分沖淡熱和微分溶解熱 還有:1。測(cè)定蔗糖轉(zhuǎn)化的反應(yīng)速率常數(shù)和半衰期 2.掌握旋光儀的使用方法 不要用翻譯網(wǎng)站翻啊······麻煩各位了 展開(kāi)
2008-03-29 00:43:16
387
1
- 急求翻譯 請(qǐng)幫忙翻譯一下這篇英文資料,急用!?。?!
- Wells-BrookfieldCone/PlateRapidDeterminationOfAbsoluteViscosityIntroductionTheWells-BrookfieldCone/PlateViscometergivesresearchersasophisticatedinstrumentforroutinelydete... Wells-Brookfield Cone/Plate Rapid Determination Of Absolute Viscosity Introduction The Wells-Brookfield Cone/Plate Viscometer gives researchers a sophisticated instrument for routinely determining absolute viscosity of fluids in small sample volumes. Its cone and plate geometry provides the precision necessary for development of complete rheological data. Principle of Operation The Wells-Brookfield Cone/Plate Viscometer is a precise torque meter which is driven at discrete rotational speeds. The torque measuring system, which consists of a calibrated beryllium-copper spring connecting the drive mechanism to a rotating cone, senses the resistance to rotation caused by the presence of sample fluid between the cone and a stationary flat plate. The resistance to the rotation of the cone produces a torque that is proportional to the shear stress in the fluid. The amount of torque is indicated either on a dial or digital display, depending on model. This reading is easily converted to absolute centipoise units (mPa.s) from pre-calculated range charts. Alternatively, viscosity can be calculated from the known geometric constants of the cone, the rate of rotation, and the stress related torque. See Range Tables The correct relative position of cone and plate is obtained by following a simple mechanical procedure without the need for external gauges or supplementary instrumentation. The stationary plate forms the bottom of a sample cup which can be removed, filled with .5 ml to 2.0 ml of sample fluid (depending on cone in use), and remounted without disturbing the calibration. The sample cup is jacketed and has tube fittings for connection to a constant temperature circulating bath. The system is accurate to within ?.0% of the working range. Reproducibility is to within ?.2%. Working temperature range is from 0oC to 100oC. 展開(kāi)
2018-11-17 09:10:28
461
0
- 急求:請(qǐng)哪位高手把壓力變送器的相關(guān)英文翻譯成中文,多謝各位!
- ThisitemissettleinDiezelengines,operatingspeedinover1100rmbisbetween300~500Kpaandtheminimomis10Kpa.R~100kohmU~5VEnginerunning65-105Degreecantigradeuptomaximom125degreewit... This item is settle in Diezel engines, operating speed inover 1100 rmb is between 300~500Kpa and the minimom is 10 Kpa. R~100 k ohm U~5 V Engine running 65-105 Degree cantigrade up to maximom 125 degree with engine load. 展開(kāi)
2009-04-22 10:12:57
331
3
- 幫忙翻譯一段關(guān)于方酸染料合成的的英文文獻(xiàn) 急急急
- Synthesisofsquarainedyeswasreportedatleastin1966。Theyarederivedfromsquaricacidwhichundergoesanelectrophilicaromaticsubstitutionreactionwithananilineoranotherelectronrich... Synthesis of squaraine dyes was reported at least in 1966 。They are derived from squaric acid which undergoes an electrophilic aromatic substitution reaction with an aniline or another electron rich derivative to form a highly conjugated product with extensive charge distribution. For instance, squaraine dyes are also formed via reaction of squaric acid or its derivatives with so-called "methylene bases" like 2-methyl-indolenines, 2-metyl-benzthiazoles or 2-methyl-benzo-selenazoles. Indolenine-based squaraines combine good photostability including high quantum yields when bound to proteins and reactive versions of these dyes are commonly used as fluorescent probes and labels for biomedical applications . 展開(kāi)
2011-05-20 09:09:32
331
2
- 急求一篇關(guān)于紅外測(cè)溫系統(tǒng)的英文資料,Z好帶中文翻譯的??!急急急
- 眼看要交論文了,至今沒(méi)找到關(guān)于紅外測(cè)溫系統(tǒng)的英文資料!著急??!誰(shuí)有幫幫忙?。?!
2009-05-20 02:51:03
569
1
- 熱轉(zhuǎn)印條碼紙或者熱轉(zhuǎn)印標(biāo)簽準(zhǔn)確的翻譯成英文,哪位知道?。考鼻?。
2010-11-02 03:53:23
647
2
- 求翻譯段英文合同,謝謝了。
- The exhaust air from the kitchen shall be cleaned as sufficient as possible over the place of generation by an aerosol separator accommodated in the hood. The aerosol separators shall be easily accessible, easy-to-demount and cleanable in a... The exhaust air from the kitchen shall be cleaned as sufficient as possible over the place of generation by an aerosol separator accommodated in the hood. The aerosol separators shall be easily accessible, easy-to-demount and cleanable in a dish washer. To this end they shall be made of chromium nickel steel only. The rate of flow recommended by the manufacturer for the separator shall be kept. Knit fabric filters and plug-on grille filters as the only aerosol separators shall not be used. The exhaustion hoods in the kitchens which are arranged on top of kitchen equipment and used to collect vapor and steams quickly shall be designed such that a sufficiently high retaining capacity is achieved. Kitchen exhaust air hoods shall at least 0.2 m protrude over the circumference on top of the kitchen appliance. If the lower edge of the hood is higher than 2.10 m on top of the floor, a higher protrusion shall be provided (angle of opening = 12° from the edge of working areas). Collection chutes shall be free from burr and arranged such at all sides that they can be drained via drains. Hoods of chromium nickel steel with integrated lighting only shall be used as exhaustion hoods. If outdoor air lines to kitchens or other rooms are passed through fire sections, they shall be equipped with suitable and approved fire protection flaps or the pipeline shall be provided with a fire protection lining from the outlet of the room. The fire protection flaps used shall be tested and approved for the relevant case of application. Exhaust air channels shall be made of fire-resistant material. Specific measures are required for the use of gas heated large-size kitchen equipment in order to ensure the necessary supply of combustion air on the one hand and to ensure reliable exhaust gas dissipation on the other. If kitchen exhaust air and exhaust gases of gas appliances are fed off commonly, an additional safeguard shall be provided. This safeguard shall switch off the gas fired equipment if the exhaust air system fails. The high exhaust gas temperatures shall be taken into account when selecting the hood structure. In any case, gas equipment shall be operated only if the room air system is in operation. 展開(kāi)
2011-01-06 01:05:10
518
3
- 高手幫忙翻譯一工科英文?。「叻执笾x!
- Figure 2 SEM micrographs of worn seat insert surface of engine #6175 after 1474 hours of testing. The arrows and labels indicate the locations of EDX analysis. The same adhesion phenomenon occurs on the valve seat surfaces. Figure 4 show... Figure 2 SEM micrographs of worn seat insert surface of engine #6175 after 1474 hours of testing. The arrows and labels indicate the locations of EDX analysis. The same adhesion phenomenon occurs on the valve seat surfaces. Figure 4 shows SEM micrographs of the worn exhaust valve seat surface of engine #6175 after 1474 hours of testing. The valve material is Stellite 6 faced 23-8N (solution treated and aged). The arrows in Figure 4b indicate the locations of EDX analysis. Note the pits and deposits on the worn seat surface. Figures 5a shows the EDX spectrum of spot A on Figure 4b showing adhered insert material. Note molybdenum and manganese in the spectrum. Figure 5b shows the EDX spectrum of spot B in Figure 4b showing both adhered insert material and oil deposits. Note molybdenum., phosphorous, chlorine, calcium, and zinc in the spectrum. Other valves from different engines labeled as "adhesion" in Table 2 share this typical adhesive phenomenon. The adhesive wear mode appears to predominate at valve seat interfaces with high asperity contact stresses or high combustion pressure. The surface roughness can contribute to adhesion significantly. Valves faced with Stellite alloy show less adhesive wear than unfaced valves, Table 2. The presence of high melting point phases, such as carbide or ceramic compounds in the contacting materials is believed to help prevent microwelding or adhesion related wear. Shear strain, also known as radial flow, is defined as the first derivative of the displacement, i.e., . Figure 6 [8]. Shear strain controlled wear can characterized as a surface plastic deformation process. The wear is the result of the shear strain on the seat surface exceeding the plasticity limit of the material. The material is then detached or delaminated from the seating surface as wear particles. The typical appearance of shear strain controlled wear are ridges and/or radial flow of material on valve seats and inserts. Shear strain controlled wear sometimes is associated with adhesion. 展開(kāi)
2009-02-19 16:10:31
425
1
- 求太原的寵物醫(yī)院 急急急?。。?
- Z好是全天24小時(shí)營(yíng)業(yè)的還有就是要靠近北營(yíng)(普國(guó)電子城附近或者是美特好附近)的... Z好是全天24小時(shí)營(yíng)業(yè)的 還有就是要靠近北營(yíng)(普國(guó)電子城附近或者是美特好附近)的 展開(kāi)
2009-12-30 18:53:17
432
4
- 求!急急急!信號(hào)發(fā)生器簡(jiǎn)單原理圖!!
- 1、要求完成原理設(shè)計(jì)并通過(guò)軟件仿真部分(1)RC橋式正弦波產(chǎn)生電路,頻率分別為300Hz、1KHz、10KHz、500KHz,輸出幅值300mV~5V可調(diào)、負(fù)載1KΩ。(2)占空比可調(diào)的矩形波電路,頻率3KH... 1、要求完成原理設(shè)計(jì)并通過(guò)軟件仿真部分 (1)RC橋式正弦波產(chǎn)生電路,頻率分別為300Hz、1KHz、10KHz、500KHz,輸出幅值300mV~5V可調(diào)、負(fù)載1KΩ。 (2)占空比可調(diào)的矩形波電路,頻率3KHz,占空比可調(diào)范圍10%~90%,輸出幅值3V、負(fù)載1KΩ。 (3)占空比可調(diào)的三角波電路,頻率1KHz,占空比可調(diào)范圍10%~90%,輸出幅值3V、負(fù)載1KΩ。 (4)多用信號(hào)源產(chǎn)生電路,分別產(chǎn)生正弦波、方波、三角波,頻率范圍100Hz~3KHz、輸出幅值≥5V、負(fù)載電阻1KΩ。 軟件仿真部分元器件不限,只要元器件庫(kù)中有即可,但需要注意合理選取。 2、要求實(shí)際制作部分 上述(4)多用信號(hào)源產(chǎn)生電路,分別產(chǎn)生正弦波、方波、三角波,頻率范圍100Hz~3KHz、輸出幅值≥5V、負(fù)載電阻1KΩ。 硬件制作部分核心元器件:uA741、LM324、9013,電阻電容不限。 展開(kāi)
2008-04-26 03:33:32
681
5
- 數(shù)控加工ZX 翻譯成英文
- 傳統(tǒng)的機(jī)械加工都是用手工操作普通機(jī)床作業(yè)的,加工時(shí)用手搖動(dòng)機(jī)械刀具切削金屬,靠眼睛用卡尺等工具測(cè)量產(chǎn)品的精度的?,F(xiàn)代工業(yè)早已使用電腦數(shù)字化控制的機(jī)床進(jìn)行作業(yè)了,數(shù)控機(jī)床可以按照技術(shù)人員事先編好的程序自動(dòng)對(duì)任何產(chǎn)品和零部件直接進(jìn)行加工了。這就... 傳統(tǒng)的機(jī)械加工都是用手工操作普通機(jī)床作業(yè)的,加工時(shí)用手搖動(dòng)機(jī)械刀具切削金屬,靠眼睛用卡尺等工具測(cè)量產(chǎn)品的精度的?,F(xiàn)代工業(yè)早已使用電腦數(shù)字化控制的機(jī)床進(jìn)行作業(yè)了,數(shù)控機(jī)床可以按照技術(shù)人員事先編好的程序自動(dòng)對(duì)任何產(chǎn)品和零部件直接進(jìn)行加工了。這就是我們說(shuō)的“數(shù)控加工”。數(shù)控加工廣泛應(yīng)用在所有機(jī)械加工的任何領(lǐng)域,更是模具加工的發(fā)展趨勢(shì)和重要和必要的技術(shù)手段?!癈NC”是英文Computerized Numerical Control(計(jì)算機(jī)數(shù)字化控制)的縮寫(xiě)。 什么是數(shù)控技術(shù)?數(shù)控技術(shù),簡(jiǎn)稱(chēng)數(shù)控(Numerical Control)。它是利用數(shù)字化的信息對(duì)機(jī)床運(yùn)動(dòng)及加工過(guò)程進(jìn)行控制的一種方法。用數(shù)控技術(shù)實(shí)施加工控制的機(jī)床,或者說(shuō)裝備了數(shù)控系統(tǒng)的機(jī)床稱(chēng)為數(shù)控(NC)機(jī)床。數(shù)控系統(tǒng)包括:數(shù)控裝置、可編程控制器、主軸驅(qū)動(dòng)器及進(jìn)給裝置等部分.數(shù)控機(jī)床是機(jī)、電、液、氣、光高度一體化的產(chǎn)品。要實(shí)現(xiàn)對(duì)機(jī)床的控制,需要用幾何信息描述刀具和工件間的相對(duì)運(yùn)動(dòng)以及用工藝信息來(lái)描述機(jī)床加工必須具備的一些工藝參數(shù)。例如:進(jìn)給速度、主軸轉(zhuǎn)速、主軸正反轉(zhuǎn)、換刀、冷卻液的開(kāi)關(guān)等。這些信息按一定的格式形成加工文件(即正常說(shuō)的數(shù)控加工程序)存放在信息載體上(如磁盤(pán)、穿孔紙帶、磁帶等),然后由機(jī)床上的數(shù)控系統(tǒng)讀入(或直接通過(guò)數(shù)控系統(tǒng)的鍵盤(pán)輸入,或通過(guò)通信方式輸入),通過(guò)對(duì)其譯碼,從而使機(jī)床動(dòng)作和加工零件.現(xiàn)代數(shù)控機(jī)床是機(jī)電一體化的典型產(chǎn)品,是新一代生產(chǎn)技術(shù)、計(jì)算機(jī)集成制造系統(tǒng)等的技術(shù)基礎(chǔ)。 現(xiàn)代數(shù)控機(jī)床的發(fā)展趨向是高速化、高精度化、高可靠性、多功能、復(fù)合化、智能化和開(kāi)放式結(jié)構(gòu)。主要發(fā)展動(dòng)向是研制開(kāi)發(fā)軟、硬件都具有開(kāi)放式結(jié)構(gòu)的智能化全功能通用數(shù)控裝置。數(shù)控技術(shù)是機(jī)械加工自動(dòng)化的基礎(chǔ),是數(shù)控機(jī)床的核心技術(shù),其水平高低關(guān)系到國(guó)家戰(zhàn)略地位和體現(xiàn)國(guó)家綜合實(shí)力的水平. 它隨著信息技術(shù)、微電子技術(shù)、自動(dòng)化技術(shù)和檢測(cè)技術(shù)的發(fā)展而發(fā)展。數(shù)控加工ZX是一種帶有刀庫(kù)并能自動(dòng)更換刀具,對(duì)工件能夠在一定的范圍內(nèi)進(jìn)行多種加工操作的數(shù)控機(jī)床。在加工ZX上加工零件的特點(diǎn)是:被加工零件經(jīng)過(guò)一次裝夾后,數(shù)控系統(tǒng)能控制機(jī)床按不同的工序自動(dòng)選擇和更換刀具;自動(dòng)改變機(jī)床主軸轉(zhuǎn)速、進(jìn)給量和刀具相對(duì)工件的運(yùn)動(dòng)軌跡及其它輔助功能,連續(xù)地對(duì)工件各加工面自動(dòng)地進(jìn)行鉆孔、锪孔、鉸孔、鏜孔、攻螺紋、銑削等多工序加工。由于加工ZX能集中地、自動(dòng)地完成多種工序,避免了人為的操作誤差、減少了工件裝夾、測(cè)量和機(jī)床的調(diào)整時(shí)間及工件周轉(zhuǎn)、搬運(yùn)和存放時(shí)間,大大提高了加工效率和加工精度,所以具有良好的經(jīng)濟(jì)效益。加工ZX按主軸在空間的位置可分為立式加工ZX與臥式加工ZX。 展開(kāi)
2008-12-26 22:47:50
895
3
- 落球沖擊試驗(yàn)機(jī)怎么翻譯成英文
2007-03-01 03:52:52
565
3
- 將下面的話翻譯成英文
- 利用磁控濺射系統(tǒng)在Si(100)襯底沉積1—6號(hào)AlN薄膜樣品.應(yīng)用表面輪廓儀對(duì)其厚度、殘余應(yīng)力和表面粗糙度進(jìn)行測(cè)量;應(yīng)用納米壓痕儀對(duì)其硬度和彈性模量進(jìn)行測(cè)量;應(yīng)用多功能表面試驗(yàn)機(jī)對(duì)其摩擦系數(shù)的測(cè)量.通過(guò)Origin8.0軟件對(duì)實(shí)驗(yàn)數(shù)據(jù)和圖形的分析處理,得出厚度... 利用磁控濺射系統(tǒng)在Si(100)襯底沉積1—6號(hào)AlN薄膜樣品.應(yīng)用表面輪廓儀對(duì)其厚度、殘余應(yīng)力和表面粗糙度進(jìn)行測(cè)量;應(yīng)用納米壓痕儀對(duì)其硬度和彈性模量進(jìn)行測(cè)量;應(yīng)用多功能表面試驗(yàn)機(jī)對(duì)其摩擦系數(shù)的測(cè)量.通過(guò)Origin8.0軟件對(duì)實(shí)驗(yàn)數(shù)據(jù)和圖形的分析處理,得出厚度、殘余應(yīng)力與工作氣壓的關(guān)系及其它物理量的曲線圖形,并且計(jì)算薄膜的屈服強(qiáng)度. 展開(kāi)
2012-04-14 23:45:37
435
2
- 氣相色譜法的定性分析依據(jù)是什么?主要有哪些定性方法,求幫忙急急急
2018-11-24 18:42:34
431
0
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