A beam-line vacuum interlock protecting system consists of fast-closing valve, gate valves, sensors and control system.

光束线真空联锁保护系统主要由快阀、门阀、压力传感器(真空规)和控制系统等组成。

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The window is fast closing and the urban search and rescue team are going for a final push to find and extract people.

眼见救援之窗即将关闭，城市搜救小组要做最后努力，尽力搜救更多的人。

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Average living standards in China are still only a sixth and in India a fourteenth of those in America at PPP exchange rates, but the gap is already much smaller than it was and is closing fast.

尽管中国的人均生活标准仍然是美国的六分之一，而印度的则是十四分之一，在购买力差异汇率下，但是其中的差距已经变得小多了，并且正在快速地消失。

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After being passed by I'll Have Another deep in the stretch, Bodemeister hung on for second, finishing a neck ahead of the fast-closing Dullahan.

WSJ: I'll Have Another Wins Kentucky Derby

Then, in December, he had to sweat it out for the European money title against a fast-closing McIlroy, who won that Tour's next-to-last event in Hong Kong.

WSJ: From Woods to McIlroy to Donald, Why 2011 Was a Very Good Year in Golf | Golf Journal by John Paul Newport

The very slow start of Windows 7 is the best sign that the window of opportunity for an additional ecosystem to ramp-up is closing fast.

FORBES: Research In Motion: Bernstein Gives Up; Sets $20 Target