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atmospheric structure
wind.	大气结构
atmospheric structure The gaseous area surrounding the planet is divided into several concentric spherical strata (layers, like shells) separated by narrow transition zones. The boundaries are know as "pause". More than 99% of the total atmospheric mass is concentrated in the first 40 km from the Earth's surface. Atmospheric layers are characterized by differences in chemical composition that produce variations in temperature
environ.	大气结构 (围绕星球的气体分为几个同心球状层，这些层由狭窄的过渡区域分开。它们之间的界限称作"中止"。超过99%的气体总量集中在最靠近地表的40km部分。不同的大气层化学组成部分在不同温度下会产生不同的物质。)

atmospheric structure: 5 phrases in 3 subjects

Electronics	1
Space	2
Wind Energy	2