英语词汇concentric valve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	concentric valve
释义	concentric valve concentrations浓聚物 concentrationn. 专心，专注；关注，重视；集中，聚集；浓度，含量 counterclockwiseadj. 逆时针方向的;自右向左的 adv. 逆时针方向...
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