The data of bullet velocities and time history curves of strain were recorded respectively by laser setup, high dynamic strain indicator and TDS420A oscilloscope.
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 system composes of two kind of laser curtain to obtain the time interval of passed bullet.
整个装置由两套相同的激光光幕构成，用以获取弹丸通过两个光幕的时间间隔。
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