camera vacuum back 真空吸气板
slide-back vacuum tube voltmeter 偏压补偿式电子管伏特计
vacuum snap-back forming 阳模反吸真空成型
Back Siphonage Backflow Vacuum Breakers 倒虹吸回流真空关闭阀
slide back vacuum tube voltmeter 偏压衬偿式电子管电压表
pressure bubble vacuum gnap-back forming 气胀阳模反吸真空成型
slide-back k vacuum tube voltmeter 偏压补偿式电子管伏特计
Nature abhors a vacuum, so if you clear space without filling it back up with something worthwhile, new distractions will creep in.
自然界没有真空，所以如果你在清理空间时不在原处放进什么有价值的东西，新的干扰物就会潜入。
The curves held eerily steady, even when Kurzweil extended his backward through the decades of pretransistor computing technologies like relays and vacuum tubes, all the way back to 1900.
即便当库兹韦尔将历史向后延伸至晶体管计算技术还未出现的上世纪初——即使用继电器和真空管的几十年间时，曲线依然表现出令人惊异的稳定性。
"I'll come back later on to take away your trash," he promises, as he sets up a portable electric hot plate on the table. He snips open sealed vacuum packs of soup to pour into the hot pot.
当他把便捷的电热板在桌子上摆放好之后许诺到：“我一会儿回来取走您的垃圾，”然后剪开真空封密汤汁并倒进火锅里面。
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