counter tube with internal gas source是什么意思

用法例句

By analyzing the escape of X-ray and Auger electron generated by 37Ar,wall effect of internal gas proportional counter in 37Ar activity measurement was studied theoretically.

通过分析37Ar衰变产生的X射线和俄歇电子在内充气正比计数管灵敏体积中的逃逸及计数管在37Ar活度测量中的壁效应,得出X射线在正比计数管中的逃逸是产生壁效应的主要原因,提出了压力指数外推方法。