火星的大气密度不及地球的大。
The atmosphere of Mars is not so dense as that of the earth.
大型陨石的撞击则可能偶发的使大气密度及温度增加。
Large meteor impacts may have occasionally thickened and warmed 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。
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，大气密度也随高度增加而降低。
Atmosphere pressure decreases with increase in altitude and so does the density of atmosphere.
这种蜃像效应，在大气分层的温度造成大气密度剧烈变化时最为显著。
The effects are most pronounced when temperature layers in the atmosphere produce sharp changes in air density and refractive index.
大气阻力是低轨卫星主要的摄动力，与高层大气密度的变化密切相关。
Atmospheric drag is the main perturbation force on a low earth orbit satellite and is closely related to the variation of high atmospheric density.
大气密度和温度的变化加上尘埃负荷。但是要意识到地球的自转和轨道处于不断的修正中。
Change in atmospheric density and temperature plus dust loading. But be aware that the planet's spin and orbit are being modified.
运用简化的模型初步分析了在不同大气密度、初始开伞速度下的充气环境对降落伞充气时间、充气距离，伞绳最大拉力的影响。
The influence of atmosphere density and initial velocity on the parachute inflation times, inflation distance and Max strain of suspension-line were analyzed by the simplified model.
在这些模型中并没有一种在任何情况下都是最好的，因此，对于特定轨道选择合适的大气密度模型对提高定轨预报的精度是非常重要的。
Therefore, it is very important to choose an appropriate atmospheric density model for a specific orbit to improve the accuracy of orbit forecast.
由于蒙气差随着大气密度、温度和压力等条件的变化而变化，为降低蒙气差对光电测量设备测量精度的影响，提出了精密恒星回扫的新方法。
A new method of precise star back scanning for reducing the influence of atmosphere refraction on the measurement accuracy of optoelectronic instrument is presented.
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。)
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).
大气层是包围着地球的空气，根据空气密度的不同分为5层，总共有2000- 3000公里厚。
Earth's atmosphere is surrounded by air, the air density, divided into 5 layers, total of 2000-3000 km thick.
大气层是包围着地球的空气，根据空气密度的不同分为5层，总共有2000- 3000公里厚。
Earth's atmosphere is surrounded by air, the air density, divided into 5 layers, total of 2000-3000 km thick.
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