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内充气正比计数法
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内充气正比计数法
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内充气正比计数方法
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internal gas proportional counting method
内充气正比计数法
采用工作在正比条件下的内充气正比计数管方法实现气体状态或可转化为气态的放射性核素活度(或单位体积活度)绝对测量的技术方法。
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thermochromic temperature measurement
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