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单词 抽真空
释义 抽真空抽真空[chōu zhēn kōng]1.evacuation; rarefy; pick up the suction; creation of vacuum; vacuum-pumping
常用词组1.抽真空时间 {半} pump-down time;2.抽真空系统 pumped vacuum system; vacuum-pumping system;3.抽真空罩 evacuated housing
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