这是检测电瓶漏气用的胶球压力试验器。
以at89s8252单片机为处理器，针对膜片式双腔制动气室，开发了一种具有USB接口的、测试制动气室漏气状况的自动试验台。
Based with AT89S8252, a test bench was designed to examine the performance of leaking of the air brake Chambers. This device was equipped with USB interface.
关于叶轮平衡孔的存在对级性能的影响，通过两种方案的试验，概论了其漏气对级效率的影响。
Through the two different designed experiments of the leak-out flow of the balance holes, its influence to the stage efficiency is presented which gives reference for the design.
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