vacuum pumping 中文意思是什麼

vacuum pumping 解釋
抽真空操作
  • vacuum : n （pl vacuums vac ua ）1 真空；空處，空虛，空白。2 〈美口〉吸塵器（＝ vacuum cleaner）。vi vt 〈...
  • pumping : 泵送
  1. The series h ? 2h ? h3 rotary piston vacuum pump is a sort of vacuum pro - duction equipment suitable for pumping ordinary gase and condensable gases ( when a gas ballast used )

    H3型系列滑閥式機械真空泵是抽除一般性氣體或含有少量可凝性氣體（此時應使用氣鎮）的真空獲得設備之一。
  2. Vacuum pumping and oil adding conveniently

    可方便地對電力設備抽真空真空注油。
  3. The working principle of liquid helium cryocondensation pump is strong absorptive force between 4. 2k cryogenic surface and gas molecules. the pump has great advantage in large instant pumping speed under high gas load, large working pressure range, high & neat ultimate vacuum

    利用4 . 2k低溫面對氣體的物理吸附機制實現高氣載下瞬時大抽速的液氦低溫冷凝泵，具有工作壓強范圍寬、能獲得清潔真空環境的特點。
  4. At the appropriate pressure, the chamber is opened to a high-vacuum pumping system that continues to reduce the pressure of the process chamber.

    在適當的壓強下，工藝室被接通高真空泵系統抽氣，以繼續降低工藝室的壓強。
  5. Vacuum pumping hardware

    真空排氣裝置
  6. The system of vpi equipment mainly includes vacuum chamber, heating unit, worktable with its drive unit, vacuum pumping unit, gas - charge unit and control unit, etc. this equipment would meet the need of al or cu matrix composites prepared by pressureless infiltration or vacuum infiltration in a high vacuum or special atmosphere

    該設備主要出密封罐、加熱系統、升降工作臺、真空系統、充氣系統、控制系統及密封罐水冷系統等組成。可以實現常見金屬基復合材料在較高真空或特定氣氛下的無壓浸滲或真空浸滲制備工藝，並可實現試樣的不同冷卻方式凝固。
  7. Hydraulic ejectors, made of cast iron or stainless steel, are widely used in vacuum and evaporation system to carry out vacuum evaporation, vacuum pumping, vacuum filtering, vacuum crystallizing, drying and deodorization etc. in the areas of sugar refinery, pharmaceutical, chemical, foodstuff, salt, monosodium glutamate, dairy, ferment, brewing, light industry and national defense

    水力噴射器分鑄鐵和不銹鋼兩種材質，應用極為廣泛，主要適用於真空與蒸發系統，進行真空蒸發、真空抽水、真空過濾、真空結晶、乾燥、脫臭等工藝，是製糖、制藥、化工、食品、制鹽、味精、牛奶、發酵、釀造、輕工、國防部門廣泛需要的設備。
  8. Liquid helium cryocondensation pump has great advantages in large pumping speed, working pressure range and high ultimate pressure, etc. it ' s more excellent than any other vacuum pump. it can meet the vacuum requirement of nbi and can improve the transportation efficiency. the development of neutral beam injection ( nbi ) system in the world, the structure of nbi system used on the ht - 7 device of asipp was introduced in the thesis

    液氦低溫冷凝泵是利用低溫面對氣體有強吸附能力的原理，實現抽氣的真空獲得設備，它具有抽速大、工作壓強范圍寬、極限真空度高等一系列優點，是普通真空設備無法比擬的，作為中性束注入系統的主抽泵，它能滿足中性束注入系統對大抽速的要求，提高中性束的傳輸效率。
  9. 2x series rotary vacuum pumps is a basic equip - ment used for pumping air from sealedvessels to attain vacuum condition

    2x系列旋片式真空泵是用來對密封容器抽除氣體而獲得真空的基本設備。
  10. Vacuum packer can complete the whole process of pumping air into vacuum state, sealing, lettering, cooling and exhaust in terms of the process, but just need to press the vacuum cover

    真空包裝機只需按下真空蓋即自動按程序完成抽真空、封口、印字、冷卻、排氣的全過程。
  11. Based on the results of testing site, some problems of vacuum preloading was analyzed by plane strain finite element method. the relative stable seepage velocity field can be produced with the pumping time. the depth of negative pore - water pressure transferring increases with the pvds length

    最後，對真空聯合堆載預壓的施工工藝進行了研究，提出了在真空聯合堆載預壓的中期，出水量已相對較少，可適當減少開泵量，並可採用停抽結合的變真空能量法，在不影響加固效果的前提下，可以大大節省用電量。
  12. The cause of vacuum degree formation under groundwater table is discussed in the paper. the testing results show that vacuum degree above the groundwater table is produced directly by pumping air, and that vacuum degree below groundwater table is produced mainly by dewatering and by escaping of sealed air from the end of flexible pipe. based on the bernoulli equation, the limit lowering of groundwater table is analyzed, which is about 5 ~ 7m. the effective influence depth of vacuum preloading has relationship with pvds depth and can be more than 10m

    對地下水位線以下的真空度成因進行了分析，結果表明，地下水位線以下測到的真空度是由於測試軟管中水位下降或部分封存氣體從軟管末端逃逸引起的，與地下水位線以上的真空度由抽氣直接形成在成因上存在不同；根據伯努俐方程，對地下水位下降的極限深度進行了分析，得出真空預壓中地下水位的極限下降深度為5 7m ；對有效影響深度的分析結果表明，真空預壓的有效影響深度與塑料排水板的打設深度具備一定關系，有效影響深度可以超過10m 。
  13. Vacuum technology. vapour vacuum pumps. measurement of the volume rate of flow pumping speed

    真空技術.蒸氣真空泵.體積流量泵的抽氣速度的測定
  14. Vapour vacuum pumps - measurement of performance characteristics - part 1 : measurement of volume rate of flow pumping speed

    蒸氣真空泵.性能特性的測定.第1部分:容積流量的測定
  15. Vacuum technology - positive - displacement vacuum pumps - measurement ofthe volume rate of flow pumping speed

    真空技術.真空正排量泵.體積流量的測定泵速
  16. A flap vlave used in pumping station is a kind of hydraulic - operated automatic gate, which is similar to a hinged check vaive. because of their simple structure and reliability, being able to shorten the length of outlet passage and facilitate the starting of pumping system in comparison with siphonic vacuum - distroied cutoff scheme. so it is propitious to be used and save investment but at the same time, flap valves always show some disadvantage

    因拍門簡單、可靠，與虹吸真空破壞截流閉鎖方式相比，可以縮短出水管道（流道）長度，並利於泵系統起動，與快速閘門相比，拍門也有諸多優點，閘門門體易關閉不到位或卡住不能活動，因為門槽和?塊較軸孔容易殘留異物，閘門門體克服滑動阻力不僅無機械增益，且阻力和動力不在一直線上，門體易傾斜而自鎖，而拍門的工作可靠性則遠高於快速閘門。
  17. The mechanics of vacuum preloading was discussed by contrast of vacuum preloading and heaped preloading. the factors affecting the result of vacuum preloading for ground consolidation were as follows : the geological conditions of site, the intensity of vacuum pumping, the condition of underground water and installation of vertical drainage line. through analysis of these factors, some conceptions and design principles were proposed for vacuum preloading

    在此基礎上，通過堆載預壓與真空預壓的對比闡述了真空預壓加固地基機理，分析了影響真空預壓加固地基最終加固效果的各個因素：場地地質條件、抽真空作用強度、地下水賦存情況及豎向排水體的設置等。
  18. Abstract : this article introduces the modifications of sulfur detection device using conbustion - volume method by converting single pipe to dual pipe structures, and discusses impacts on detecting accuracy of vacuum pumping flow and its deficiency

    文摘:本文介紹了燃燒-容量法測硫裝置單管轉雙管的改造，討論了真空泵抽空氣流量對準確測定的影響及不足之處。
  19. Vacuum pumping system

    真空排氣系統
  20. The influence of various factors, including lowest pressure of the vacuum chamber, water content and size of the sample in three states of solid, lidquid or syrup, on cooling rate and on final sample temperature in self - freezing by vacuum pumping, was studied

    摘要以液態、漿態和固態三種不同類型的物料為對象，通過大量實驗研究了真空室壓力、物料含水量和尺寸對抽真空自凍結的降溫速率和對凍結最終溫度的影響規律。
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