1、[核]正比计数管
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2、比例计数管
... proportional counter spectrometer 正比计数器光谱计 proportional counter tube 比例计数管 proportional counter 比例计数器 ...
3He proportional counter tubeHe正比计数管
bf proportional counter tubebf3正比计数管
boron deposited proportional counter tube硼沉积正比计数管
bf 3 proportional counter tubebf正比计数管