... umbrella vent ==> 伞形通风筒 umbrella-shaped roof ==> 伞形屋顶 umbrella-type alternator ==> 伞形交流发电机,伞形水轮发电机 ...
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umbrella shaped roof 伞形屋顶
umbrella-shaped roof
伞形的屋顶
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In connection with an engineering example, this paper introduces the application of a novel active roof-propping technique which uses umbrella-shaped braces and screw jacks for active propping.
在该工程中采用了新颖的伞型斜向支撑技术，并利用螺旋式千斤顶进行主动支顶。
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