vacuum

• In 1963, we evaluated an infrared vacuum combustion, gas heating system .
  在1963年，我们使用了内燃真空燃烧器的煤气加热系统。
• When there is vacuum in the intake manifold, the vacuum holds the diaphragm up .
  当进气歧管有真空存在时，真空便向上吸引膜片。
• A high vacuum in the fuel tank can cause atmospheric pressure to collapse the tank .
  燃油箱内的高真空，会引起大气压力压塌油箱。
• In the first few hours after my nomination, i was as if suspended in a vacuum .
  在我被报名后的数小时内，我感到似乎停留在真空中。
• The interior of the tube must be kept a hard vacuum to preserve the photo cathode .
  显象管内部一定要保证高真空才能保护光电阴极。
• In the round piston vv carburetor, the piston is moved by intake-manifold vacuum .
  在圆形活塞的VV化油器中，活塞是由进气歧管真空移动的。
• Use of a rotary vacuum evaporator will expediate the concentration steps in the procedure .
  使用一座旋转真空蒸发器将会加快操作手续的浓缩过程。
• In such a vacuum they produce merchandise that is both unwanted and inferior .
  在这样一种心中无数的状况下，他们生产的商品既无人需要，质量又低。
• The vacuum is picked up from one of the primary-barrel venturis and is called venturi vacuum .
  真空是由主腔中的一个腔的喉管建立的，被称为喉管真空。
• When the engine is shut off, the intake manifold cools and a slight vacuum forms as a result .
  这是因为当发动机熄火时，进气歧管冷却而产生轻微的真空。