The aircraft had reached its cruising altitude of about 39,000 feet.

那架飞机已经达到了大约三万九千英尺的巡航高度。

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The lower oxygen pressure found in an aircraft cabin is equivalent to that at 6,000-8,000 feet of altitude.

机舱里的氧分压会更低，其数值跟6000到8000英尺高空的氧分压值一样。

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The width of the boom "carpet" beneath the aircraft is about one mile for each 1000 feet of altitude.

飞机下面音爆“地毯”的宽度大约是一英里对应1000英尺的高度。

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In contrast to the Predator, which typically flies at an altitude of 15, 000 feet, the Global Hawk is a high-altitude aircraft capable of flying at 65, 000 feet, beyond the reach of any ground-based weapon.

ECONOMIST: Unmanned aircraft

To the surprise of the airlines, control towers began unilaterally to impose a separation of 60 nautical miles between aircraft, irrespective of their altitude.

ECONOMIST: A jam at 32,000 feet

The BAMS-D program has been developing tactics and doctrine for the employment of high-altitude unmanned patrol aircraft since November 2006.

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