最后得出熔焊既可以发生在触头闭合过程，也可能发生触头分断过程。
Welding can take place in a relay either during closing period, or during breaking period.
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，监测了其触点闭合过程的接触压降。
The contacts voltage of counterpart contacts in the close course of electromagnetic relay is observed and recorded in its failure tests 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。
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.
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