铁路运输设备。空气制动装置和空气导管。毫米离合器。
Railway transport equipment. air brake and air pipes. 25 mm half - couplings.
最常见的向风袋输送空气的方法便是用导管。
The most common method of supplying air to the bag is by a blowpipe.
气球是瘪之前，导管抽吸去除后的液体或空气。
The balloon is deflated prior to catheter removal by aspirating back the fluid or air.
气球是瘪之前，导管抽吸去除后的液体或空气。
The balloon is deflated prior to catheter removal by aspirating back the fluid or air.
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