vacuum box吸水箱,真空箱
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 switch with multiple breaks多断口真空开关
vacuum-type pneumatic micrometer真空式气动测微计
vacuum multi-pressure absorption真空变压吸附
Vacuum filler with external valves阀外置式真空灌装机
Vacuum booster and master cylinder真空助力器和制动主缸
Vacuum degassing treatment process真空过程
vacuum and pressure breather valve真空压力呼吸阀
vacuum negative pressure reshaping真空负压整形