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 binant electrometer真空双象限静电计
vacuum capillary viscometer真空毛细管粘度计
vacuum-and-blow process真空吸料吹制法
vacuum-chamber dimensions真空室尺寸
vacuum pressure measurement真空度测量
vacuum pack sealing machine真空包封机
vacuum-operated milk lift真空式抽奶器
vacuum distillation process真空蒸馏过程
Vacuum bag Metalized Al bag抽真空尼袋
vacuum-full mould casting真空实型铸造法