Vacuum
['vækjʊəm]
解釋/意思:
(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'.
編輯:韦斯利--From WordNet
解釋/意思:
(n.) A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum.
(n.) The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch.
艾伯特整理
同義詞及近義詞:
n. Void, empty space, vacuity.
克劳德整理
例句/造句/用法:
- 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. 十九世紀發明進展.
- He was isolated as if there were a vacuum round his heart, or a sheath of pure ice. 大衛·赫伯特·勞倫斯. 戀愛中的女人.
- This fact he utilized by the means which he has described, a lamp having a filamentary carbon burner in a nearly perfect vacuum. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
- 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. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
- The vacuum pan was the invention of Howard, an Englishman. Edward W. Byrn. 十九世紀發明進展.
- His problem therefore was how best to compress the air, or, as it appeared to him, how to secure a vacuum. 魯伯特·薩金特·荷蘭. 歷史性發明.
- The most practical methods of refining salt today are known as the Grainer, Vacuum Pan and Alberger systems. 佚名. 神奇的知識之書.
希尔达整理