The signal characteristic of single and mass broken wires is investigated and the testing signal is analyzed in the experiments.

实验研究了单根断丝和集中断丝的漏磁信号特征。

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Normalization method of ultrasonic testing signal, the advantages and disadvantages of time domain, frequency domain were discussed.

探讨了超声波检测信号归一化处理的方法，以及时域信号归一化和频域信号归一化的优缺点。

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Testing signal is very sensitive to the lift off effect in the hardness nondestructive testing of rail surface by electromagnetic method, so lift off effect must be restrained.

电磁无损检测钢轨踏面硬度中，检测信号对提离效应极其敏感，所以必须对提离效应加以抑制。

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For the last year a small van has been driving around all the bus routes testing the 3G signal.

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My testing shows that this signal is this is backward-looking and not very useful, but since a large number of people believe it, they act on it resulting in a self-fulfilling prophecy.

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"We can actually apply this kind of testing to just about any signal, " spokesman Tischler said.

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