The air passage is called the air bleed.
空气通道叫通气孔。
Cause and treatment of air channel blockage at main heat exchanger
主换热器空气通道堵塞原因分析及处理
Analysis of Air Channel Blockage in the High-pressure Plate-fin Heat Exchanger for Internal-compression Air Separation Unit
内压缩流程空分设备高压板翅式换热器空气通道堵塞的分析
A vent to permit the escape of air or other gas.
气孔空气或其它气体通出的通道
These are simply air passage.
这些都是空气的通道。
Air pressure forces the water through the pipe.
空气压力使水通过管道.
A passageway or shaft in which air circulates, as in ventilating a mine.
通风道，换气坑空气流通的通道，如使矿井通风的风道
A passage for drawing up smoke or air.
上风井，上风烟道发散烟或空气的通道
a hole that allows the passage of air.
一个能使空气流通的通道。
a ventilation shaft through which air enters a mine.
煤矿里能让空气流通的一个通道。
Air-bleed passages are also sometimes called antisiphon passage.
空气渗入通道有时也称为防止虹吸通道。
Exhaled air, as evidenced by vapor, odor, or heat.
呼出的空气如通过水气、味道或热气显示出来的
Air-heating systems circulate air through ducts to and from an air heating collector (Figure 1).
空气加热系统使空气循环，通过通往或是通出空气加热收集器的管道（见图一）。
It is concluded that the single suction double acting unit with balance passage is better than the double suction unit without balance passage.
得出了开平衡通道的单级抽气可以设计得比不开平衡通道的双级抽气真空泵真空度高的结论。
Empty two-position valve accommodating five ports.
排空两个位置的放气阀，它调节五个通道。
Empty three-position valve accommodating five ports.
排空三个位置的放气阀，它调节五个通道。
Empty four-position valve accommodating five ports.
排空四个位置的放气阀，它调节五个通道。
Experiment Study of Overflow of Smoke to Atrium
烟气自通道向中厅大空间扩散的实验研究
