空气密度是指在一定的温度和压力下，单位体积空气所具有的质量就是空气密度。在标准条件下（0℃，1个标准大气压（1atm）），空气密度约为1.29Kg/m³。
空气密度 [kōng qì mì dù]
双语例句原声例句
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引擎将高超音速飞机带向空气密度、阻力比较稀少的高度。
That engine would carry the hypersonic craft to an altitude where air density and resistance are less.
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热空气比冷空气密度小，因此热空气总在冷空气上方。
Warm air is less dense than cooler air so it ends up layered on top of the downward moving cooler air.
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冬天：寒冷、空气密度增加、风比较大，气流平稳。
Winter - Cold, dense air, strong winds at times with stable air.
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So, instead of having the periodic variation of water, or the periodic variation of air density here we're talking about an electric field.
不像水或者空气密度的,周期变化，我们这里,讨论的是电场。
应用推荐
$firstVoiceSent
- 来自原声例句