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The elastic wave gain is easy, inspires using the hammer firing, the operation is simple.
弹性波的获取容易，利用锤击发振，操作简单。
youdao
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Pressure wave of water hammer produces serious hazard for pipeline.
管道发生水击时的水击压力波对管道的危害非常严重。
youdao
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Pressure wave of water hammer produces serious hazard for pipeline.
管道发生水击时的水击压力波对管道的危害非常严重。
youdao