The dynamic railway-detecting instrument is an effective way to examining the smooth of the railway., 轨道动态测试仪是检测轨道平顺性的有效手段。

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Traditionally, the term “braindump” referred to someone taking an exam, memorizing the questions, and sharing them online for others to use. That practice is unethical and violates the ISC2 ...

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His parents were saved by others, and they were reunited after the war before immigrating to Canada., ...