... Tight Encirclement 天罗地网 ; 重围 ; 重重包围 steam tight 蒸汽密封 ; 汽密的 ; 不漏蒸汽的 ; 气密 water tight 不漏水的 ; 水封 ; 水密水密的不漏水的 ; 防水的 ...
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盖紧盖子这样液体和蒸汽都被密封在里面。
Tighten the lid securely so that liquid and vapors will be contained.
蒸汽机的核心是汽缸。它一端密封，另一端有个可以移动的活塞。
The core of a steam engine is a cylinder that is sealed at one end and has a moving piston at the other.
这一功能强大的编码器采用了双重密封的房屋，允许编码器将在监管冲洗高压蒸汽或环境腐蚀性化学品的经营。
This robust encoder features a double sealed housing that allows the encoder to be operated in regulatory washdown and high pressure steam or caustic chemicals environments.
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