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A new method about measurement of the precursory infrasonic waves of strong earthquake was introduced.
介绍强地震前兆观测的一种新方法—次声波法。
youdao
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A new method about measurement of the precursory infrasonic waves of strong earthquake was introduced.
介绍强地震前兆观测的一种新方法—次声波法。
youdao