flow-gas proportional counter 流气式正比计数器

internal gas proportional counter 内充气正比计数管

flow gas proportional counter tubes 流气式正比计数管阵列

gas proportional scintillation counter 气体正比闪烁计数器

gas flow proportional counter 气流正比计数器

Gas Filled Proportional Counter 气体密封型比例计数管

gas s proportional counter 气体正比计数器

gas scintillation proportional counter 气体闪烁正比计数器

gas s proportional scintillation counter 气体正比闪烁计数器