vacuum pan真空盘,真空锅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 assisted hydraulic brake system真空助力液压制动系统Vacuum Booster Performance Testing Bed真空助力器性能试验台Vacuum infiltration casting technology负压铸渗vacuum fractionating distilling column真空精蒸馏塔vacuum consumable electrode arc furnace真空自耗电弧炉vacuum spherical symmetry gravity field真空球对称引力场vacuum-quenching in high pressure gas真空高压气淬vacuum fluorescent digit-display tube真空荧光数字显示管vacuum circulation distilling apparatus真空循环蒸馏器vacuum-type automatic bottling machine真空式自动装瓶机