英语翻译1.the height of the atmosphere is about 30km.the radius

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英语翻译
1.the height of the atmosphere is about 30km.the radius of earth is 6400km.what percentage of earth's radius is the height of the atmosphere?
2.how would the density of air at the bottom of a deep mine shaft compare to the density of the atmosphere at the surface of the ground?

1.大气的高度是大约30千米地球的半径是6400千米地球的半径的多少百分比是大气的高度?
30/6400=0.46875%
2.在一口深的矿井的底部大气的密度与在地的表面大气的密度相比较将会怎样
因为密度=质量/体积,在矿井底部压强大,导致体积变小,所以在空气质量不变的条件下,密度会增大

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