The air flows down to a shaft and thus loses potential energy.
空气向下进入竖井，因而失去势能。
The role of the move is to prevent the cold air into the building of the elevator shaft.
此举的作用也是阻止冷空气进入大厦的电梯井道。
This is the ventilation shaft through which air leaves a mine.
这是煤矿上用来疏通空气的通风井。
Check the convoluted air bellows on the front cardan shaft for damage.
检查前万向节轴上的回旋式风箱是否损坏。
The mine flooding happed during construction of the air shaft in Qidong Coal mine.
祁东煤矿风井在建井过程中，发生钻井井壁突水事故，井筒被淹。
Front shaft stretches to ensure a comfortable fit and seals cold air out.
前轴延伸，以确保佩戴舒适和密封冷空气出来。
Key type air pressure shaft type paper tube fixed design is adopted in this machine.
本机采用键式气压轴式纸管固定设计。
Key type air pressure shaft type paper tube fixed design is adopted in this machine.
本机采用键式气压轴式纸管固定设计。
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