The two wires may be sealed into a glass tube and the air can be pumped out.
可以把这两根导线封入一根玻璃管内,并且可以把空气从玻璃管内抽出去去。
Afew hundred million gallons of water will also be pumped out of the local aquifer each year.
每年将有几个亿加仑的水从当地的地下蓄水层抽取上来。
The vaporized steam can be pumped out through vacuum exhaust pipe when the damp raw material absorbed heat.
湿物料吸热后蒸发的水汽,通过真空泵经真空排气管被抽走。
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