A space entirely empty of matter. 真空。 A space, such as the inside of a bottle, nearly emptied of air by artificial means. 以人工造成的真空。 feel a vacuum in the lower regions 感觉饥饿。 To use a vacuum device, such as a vacuum cleaner, on. 使用吸尘器打扫。 To operate a vacuum device. 使用吸尘器；操作真空装置。 vacuum cleaner 真空吸尘器。(= vacuum sweeper) vacuum pump (a)真空帮浦；排气唧筒。(b)真空式抽水机。 vacuum sweeper 真空吸尘器。(= vacuum cleaner) vacuum ventilation 抽气通风法(从一边抽气使新鲜空气从另一边流入以填补之)。 |