Methods: The model of quantitative injury was established in rats with the weight drop apparatus with a laser compression recorder.

方法：利用激光束描记位移的重力打击装置，制备可靠的定量损伤模型；

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To a flight data tape recorder shortcomings of big volume, high weight and expensive, a type of flight data solid-state recorder for a certain type of aircraft is presented.

针对某飞机飞行数据磁记录器体积大、重量重以及价格昂贵的缺点，设计了一种新型飞行数据固态记录器。

youdao

To a flight data tape recorder shortcomings of big volume, high weight and expensive, a type of flight data solid-state recorder for a certain type of aircraft is presented.

针对某飞机飞行数据磁记录器体积大、重量重以及价格昂贵的缺点，设计了一种新型飞行数据固态记录器。

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