采用激光测速仪测量子弹速度，动态应变仪和TDS420 A数字示波器记录应变时程曲线进行动力响应分析。
The data of bullet velocities and time history curves of strain were recorded respectively by laser setup, high dynamic strain indicator and TDS420A oscilloscope.
并用地下水异常、激光锁相应变仪测到的地震前兆，分析了地球自转短周期与地震的关系。
We have also analyses the relation between short cycle of earth rotation and earthquakes, according to the an…
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