请装上通风管道。

Please fit the ventilation ducts.

youdao

所以，通风管道质量是很重要的。 。

Therefore, ventilation pipe quality is very important.

youdao

通风管道是通风系统的重要组成部分。

Ventilation pipe is vital part of ventilation system.

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每部份处理管道的所有高点都应适当通风以便空气排出。

All high points of each section treated shall be properly vented for air escape.

youdao

钻孔机在一个密封的通风管道前受阻，而这个管道离矿工们还很远。

The drill may have hit a sealed shaft, away from the miners.

youdao

钻孔机在一个密封的通风管道前受阻，而这个管道离矿工们还很远。

The drill may have hit a sealed shaft, away from the miners.

youdao