This kind of recorder is completely portable and very light in weight.
这种录音机是便携式的，而且重量很轻。
2
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；
3
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.