The forces necessary for flight are directly related to air density.
飞行所需要的动力直接关系与空气密度。
Airports at higher altitudes require a longer airstrip due to lower air density.
在高海拔地区建机场，由于空气稀薄的原因，需要一个较长的跑道。
The air density distribution of the cross section could be reconstructed by SSART.
应用SSART技术可以重建截面密度分布。
An analytical model of air density derived from CIRA 1972 is presented in this paper.
本文导出了与CIRA 1972内符合精度较高的一种分析模型。
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。
The appraisal of the wind resources cant be given only by the speed, direction, air density, etc.
风资源的评价不应当只有风速、风向、空气密度等常规指标，还应评估风的质量。
Even when the pressure stays the same, great changes in air density are caused by changes in temperature.
即使压力不变，气温的变化也能引起空气密度的巨大变化。
The air density in the exosphere is so low that atoms and molecules can escape from it into interplanetary space.
外逸层中空气的密度非常小，以致原子和分子都能逃逸到星际空间。
The effects are most pronounced when temperature layers in the atmosphere produce sharp changes in air density and refractive index.
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 same period, the ocean thermal slow, relatively high temperature, air density changes smaller solipsism relative area of low pressure.
同一时期，海洋散热较慢，温度相对地较高，空气密度变化较小，遂形成相对的低压区。
A distribution of air pressure and the mass of a given volume of air such that the air density is a function of only atmospheric pressure.
气压的-种分布情况，给定体积内空气质量，即空气的密度，仅仅是气压的函数。
The article believes that the reduced air density in high- altitude district exerted certain influence on each part of the burning system.
文章认为，高海拔地区，由于空气密度降低，对烧成系统各部分都将产生一定的影响。对影响较小的可不改变原系统内各种设备的规格。
A distribution of air pressure and the mass of a given volume of air such that the air density is not a function only of atmospheric pressure.
一种气压的分布情况，其中给定体积内的空气质量，即空气的密度，不仅仅是气压的函数。
An empirical equation was obtained for explaining the relationship between streamer stability propagation field and relative air density, humidity.
通过数据拟合得到了流注稳态传播电场和相对空气密度以及湿度之间的经验公式。
In Johannesburg, the exact same shot would either fly over the crossbar or hit the wall, as the lower air density reduces both drag and the effect of spin.
在约翰内斯堡，完全相同的射击既可能比球门飞得高也可能撞到人墙，因为更低的空气密度既降低了拖曳力也降低了旋转效应。
It was shown that wet bulb temperature and altitude could do effect on the air density which influence the performance of room air conditioner according with the other equation.
结合相关公式分析了在一定条件下空气密度对空调性能产生重要影响，而湿球温度和海拔高度是影响空气密度的主要原因。
The new technique takes into account the effects of air density change and rotational speeds, thereby improving the analogy theory and making it applicable to compressible flow.
新方法考虑到工质密度和转速变化对压气机特性的影 响，改进了相似理论并使其可应用于可压缩流体计算中。
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。)
You can land on an airstrip with various approach patterns, depending on air traffic control guidelines due to weather, traffic density, wind speed, and so on.
您可以使用各种各样的方法模式在飞机跑道上降落，这取决于由天气、交通密度、风速等等因素决定的空中交通控制指导。
The key to this is the reduced density of the atmosphere, which affects how fast the ball moves through the air and also the bend of a spinning ball.
此处的关键在于大气的折合密度，它会影响球在空中穿越的速度以及旋转球的弯曲度。
The density of air varies directly as pressure, with temperature being constant.
温度不变，空气的密度和压力成正比。
The French company Air Austral said that it placed orders for two "high density" double-decker A380s with a capacity for 840 seats.
法国奥斯特拉尔航空公司(airAustral)表示，已经订购了两架“高密度”的双层A380飞机，一次可搭载840名旅客。
There is no realistic prospect for widespread electric air travel: the jet engines on aircraft need the high-energy density that only chemical fuels can provide.
广泛的以电力为驱动的空中旅行很不现实：飞机发动机需要高密度的能量，而这些只有化学燃料才可提供。
Nerve agents have more density than air, making them dangerous to people in low areas.
神经毒剂的密度大于空气，致使它们对处在低洼地区的人们而言相当危险。
Nerve agents have more density than air, making them dangerous to people in low areas.
神经毒剂的密度大于空气，致使它们对处在低洼地区的人们而言相当危险。
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