英语词汇fractional clearance怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	fractional clearance
释义	fractional clearance 简明释义分级清除率网络释义 1 ?分级清除率分级清除率短语 1 fractional clearance rate 部份廓清率
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