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In contrast to the mechanism of conduction and convection,radiation may take place in a perfect vacuum. 与传导和对流的原理不同，辐射可在完全真空中进行。
In contrast to the mechanism of conduction and convection, radiation may take place in a perfect vacuum . 与传导和对流的原理不同，辐射可在完全真空中进行。
In contrast to the mechanism of conduction and convection, radiation may take place in a perfect vacuum. 与传导和对流的原理不同,辐射可在完全。
In contrast to the mechanism of conduction and convection , radiation may take place in a perfect vacuum . 与传导和对流的原理不同，辐射可在完全真空中进行。
In contrast to the mechanism of conduction and convection , radiation may take place in a perfect vacuum. 与传导和对流的原理不同，辐射可在完全真空中进行。
Moon's perfect vacuum, the weak magnetic field environment suits the construction astronomical observation and the base which observes to the place. 月球的高真空、弱磁场环境十分适合建设天文观测和对地观测的基地。
Vacuum may be thought of as the absence of pressure. It is the measure of negative pressure between standardized atmospheric pressure and a theoretically perfect vacuum. 真空可以被认为缺少压力。真空是以标准大气压的负压和理论完全真空来测量的。
According to quantum theory, even a perfect vacuum is not truly empty; it is filled with fluctuations as a result of the Heisenberg uncertainty principle. 根据量子理论中的海森堡测不准原理，就算是完美的真空也不是空无一物，而是充满了量子涨落。
According to quantum theory, even a perfect vacuum is not truly empty;it is filled with fluctuations as a result of the Heisenberg uncertainty principle. 根据量子理论中的海森堡测不准原理，就算是完美的真空也不是空无一物，而是充满了量子涨落。
In physics, the notion of a “perfect” vacuum or an “ideal” gas is an abstraction that permits scientists to study real-world phenomena in simplified sittings. “完全”真空或“理想”气体的概念在物理上是抽象概念，它能让科学家在简化的环境下研究真实世界。
Nothing in the world is flawless and perfect. 世上没有十全十美的东西。
Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
The weather during our holiday was perfect. 我们度假时的天气好极了。
The project is far from perfect. 这项企划很不完美。
His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
What's the secret of baking perfect bread? 烤出好面包的秘诀是什么？
Her husband's death left a vacuum in her life. 她丈夫的死使她的生活变得空虚。
Some people are living in a vacuum. 有些人过着与世隔绝的生活。
He didn't have perfect attendance this year. 他今年有缺勤。
A vacuum cleaner is a handy household tool. 吸尘器是一种使用方便的家庭用具。