... 极限真空渡 ultimate vacuum 真空极限 Kpa ; Ultimate vacuum ; vacuum 作为追求真空极限 Ultimate in Vacuum ...
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KT - 400高真空油扩散泵，它的特点是真空极限高，抽速大，提高生产效率，同时真空气动阀门采用自动控制。
KT-400 high vacuum oil diffusion pump, which is characterized by extreme high vacuum, pumping speed large, increase production efficiency while the vacuum pneumatic valves with automatic control.
所以说，光速可以减慢却不能加快：真空好比是自然界的康庄大道，光便以其极限速度疾驰在这条大道上。 欧洲粒子物理研究所的实验室里到底发生了什么？
So light can be slowed down, but not sped up: the vacuum is nature's open road where light travels at the speed limit.
介绍了设计原则、实现途径和极限真空估算。
The design principle, the way to carry out and estimation of limited vacuum were introduced.
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