piston ventilation shaft的意思|示意
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活塞式通风轴
piston ventilation shaft的网络常见释义
活塞风道 ...活塞风道, [gap=439]nderground railway,platform screen door,ventilation and air conditioning system,piston ventilation shaft, ...
piston ventilation shaft相关短语
1、 piston ventilation shaft layout 活塞风井设置