以上来源于: WordNet
If fan blade assembly is replaced because of mechanical damage, water pump and viscous fan drive should also be inspecteThese components could have been damaged due to excessive vibration.
如果因为机械损坏而更换风扇叶片组合，应该检查水泵及粘性风扇驱动，这些组件可能由于过度抖动而损坏。
Natural ventilation is the ventilation of a building with outside air without the use of a fan or other mechanical system.
自然通风是不使用风扇和其他机械系统进行室内外气体交换的通风方式。
The signification of fan impeller repair is set forth in respects of aerodynamic, mechanical property, safety and economy.
对通风机叶轮修割的意义分别在气动性能、机械性能、安全性和经济性方面来阐述。
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