chamber proportional ionization
《英汉家具实用词汇》之八家具生产与技术 ... Chamfer 倒棱，槽 Chamfered joint 斜削接 Check valve 止回阀，单向阀 ...
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proportional ionization chamber
... 比例计数管 proportional counter tube 比例游离腔 proportional ionization chamber 比例泵 proportional pump ...
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