vacuum gap真空间隙
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-impregnated真空浸渍的
vacuum sealing block真空密封座
vacuum pre-cooling真空预冷
vacuum tube register电子管寄存器
vacuum cleaning line真空除尘管线
vacuum mud-jacking真空压浆
vacuum-tube switch真空管开关
vacuum keeping fresh真空保鲜
vacuum tube generator真空管振荡器
vacuum hot-pressing真空热压法