本文重点介绍了透气系统的功能、型式和组成，并详细阐述了系统中管路管径的计算顺序和方法；
The author describes the function, type and components of this system, as well as the calculations of pipe diameter of the system.
黄铜无缝管可用于热交换器和冷凝器、低温管路、海底运输管。
Brass seamless tube can be used in heat exchanger and condenser, low temperature pipe, underwater transportation pipe.
在分支管路中，当分支管中的流量大于某一值时，自激振动就不会产生。
Whenthe discharge is higher than a certain value in a branch pipe, on self - excited vibration will produce.
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