Vacuum

(noun.) an electrical home appliance that cleans by suction.

(noun.) a region that is devoid of matter.

(noun.) the absence of matter.

(verb.) clean with a vacuum cleaner; 'vacuum the carpets'.

编辑:韦斯利

• In this a vacuum is maintained by a condenser, the vapors passing from the pan to the condenser through the great curved pipe rising from the top, which pipe is five feet in diameter. Edward W. Byrn. 十九世纪发明进展.
• He was isolated as if there were a vacuum round his heart, or a sheath of pure ice. 戴维·赫伯特·劳伦斯. 恋爱中的女人.
• This fact he utilized by the means which he has described, a lamp having a filamentary carbon burner in a nearly perfect vacuum. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• When the first lamp-works were started at Menlo Park, one of my experiments seemed to show that hot mercury gave a better vacuum in the lamp than cold mercury. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The vacuum pan was the invention of Howard, an Englishman. Edward W. Byrn. 十九世纪发明进展.
• His problem therefore was how best to compress the air, or, as it appeared to him, how to secure a vacuum. 鲁伯特·萨金特·荷兰. 历史性发明.
• The most practical methods of refining salt today are known as the Grainer, Vacuum Pan and Alberger systems. 佚名. 神奇的知识之书.

希尔达整理