倒: 倒动词1.(人或竖立的东西横躺下来) fall; topple 短语和例子摔倒 fall over; 倒在地上 topple down to the ground; 风把树刮倒了。 the gale uprooted the tree. 那个疲劳的旅客往床上一倒就睡着了。 the tired traveller fell back on the bed and at onc
抽真空: creation of vacuumcreed receiving perforatordeaeratedegassingevacuationpick up the suctionvacuatevacuum pumpingvacuum supplyvacuum-extractionvacuum-pumpingvacuumize