The engine, as it cooled itself, sucked in air through the outlet hose, producing suction in the vacuum chamber, and so drawing the plunger down and compressing the spring.
当引擎冷却时，通过出口软管吸入空气，在真空管产生吸气，导致柱塞向下挤压弹簧。
Vacuum arc remelting furnace is a very important and can't be substituted equipment on titanium melt and producing good quality alloy steel.
真空自耗电弧炉是钛冶炼及生产高质量合金钢的十分重要和不可替代的设备。
This paper briefly introduces the flavor, species, producing technology and equipment of vacuum freeze-dried food.
本文简要介绍了真空冷冻干燥食品的特点、种类，生产工艺及设备。
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