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Density altitude 密度高度
standard density altitude 标准密度高度
density at altitude of flight 飞行高度的空气密度
density at zero altitude 海平面空气密度
Every 1000 metres increase in altitude reduces atmospheric pressure - and hence the density of the air - by about 11 per cent (though the precise formula is more complicated than this).
海拔每上升1000米大气压力- - -也就是空气密度- - -会降低大概11%(虽然精确的公式比这要更复杂。)
That engine would carry the hypersonic craft to an altitude where air density and resistance are less.
引擎将高超音速飞机带向空气密度、阻力比较稀少的高度。
Atmospheric pressure decreases with increase in altitude and so does the density of the atmosphere.
大气压力随高度增加而降低，大气密度也随着高度增加而降低。
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