vacuumn.真空;真空吸尘器;空白adj.产生(利用)真空的v.用吸尘器打扫
vacuum area真空区域
vacuum cups真空吸头
vacuum gage真空计
vacuum WAND真空吸笔
vacuum case真空室
vacuum cock真空活塞
vacuum hump真空泵
vacuum line真空管
vacuum trap真空阱,真空聚集槽
vacuum leak真空漏泄,真空损失