air inlet pipe and air exhaust pipe
进气管和排气管
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The air exhaust pipe is sleeved on the air inlet pipe, so that the air inlet pipe is located in the center of the whole tank, so as to reduce piping space and reduce the volume of the whole device.
抽气管套在进气管上，使进气管位于整个罐体的中心位置，缩减了管排布空间，减小了整个装置的体积。
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