In this paper the design, construction and check out of the vacuum line are presented.

介绍了真空排水系统的设计、施工及验收等有关注意事项。

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The invention relates to a vacuum line (10) comprising two line parts (12, 13) connected by a vibration damper (14).

本发明涉及一种真空管路(10)，该真空管路(10)包括两个由振动阻尼器(14)连接的管路部件(12,13)。

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Relativity says that light always moves in a straight line through empty space, and always at the same speed in a vacuum, no matter what your observation point.

它指出光在真空中走直线，且在真空中光速恒定，不论你的观测点如何。

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"There may be a bit of a demand vacuum a few months down the line, " he said.

WSJ: Gold Rally May Lose Steam

Adopting this line of thinking in a vacuum can actually send a company into a death spiral.

FORBES: Successful Leadership Requires The Right Order Of Operation

Colonels and Generals, whether in the military or marketing, are often so far removed from the line of engagement that, without listening to front line personnel, their decisions are made in a vacuum.

FORBES: Good Managers Listen. Great Managers Ask Questions.