vacuumpumpn.真空泵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 air sampling method真空气体采样法vacuum-injection process真空注射法vacuum multi-layer press真空多层压机vacuum-pump power supply真空泵电源vacuum distillation column真空蒸馏塔vacuum-deposited circuit真空淀积电路vacuum critical cryodrying真空临界低温干燥vacuum-deposited coating真空镀敷法vacuum fractionating tower真空分馏塔vacuum cementation furnace真空渗碳炉