vacuum cap真空罩
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 mud-jack process真空压浆工艺
vacuum processed concrete真空处理混凝土
vacuum ventilation system真空通风系统,真空式通风系统
vacuum windshield cleaner真空驱动式风窗刮水器
vacuum multilayer package抽真空复合包装袋
Vacuum-assisted closure封闭负压引流
vacuum-power gear shift真空助力换挡
Vacuum electronic devices电真空器件
vacuum-treated concrete真空处理的混凝土