在对流层中，高海拔地区的空气通常比低海拔地区的空气冷。
In the troposphere, the air at higher altitudes is in general cooler than the air below it.
在对流层上是平流层，接着是电离层，最上层是外逸层。
Above the troposphere is the stratosphere, followed by the ionosphere and capped by the exosphere.
在对流层散射通讯中已证明M在100到1000的数量级。
In troposcatter transmission it turns out that m is of the order of magnitude of 100 to 1000.
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