The contact voltage-drop of counterpart contacts in the closing course of electromagnetism relay is observed and recorded in its failure test using dynamic contact resistance measurement system.

用动态接触电阻测量系统进行了电磁继电器失效检测试验，检测了其触点闭合过程的接触压降。

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The large dynamic testing devices in the US are listed and the drop hammer test is introduced as an alternative test.

对部分测试内容进行了着重讨论，并列出了美国大型动力测试设备的情况。

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On this basis, it is through a series of experiments, including drop hammer experiment, high-speed rotating floor experiment and dynamic simulation experiment to test the performance of the receiver.

在此基础上，通过开展落锤试验，高速转台试验，以及高动态模拟试验测试接收机的整体性能测试。

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