以氢原子和氦原子为主要成分的地球高层大气。由于氢原子和氦原子发出微弱的辐射而得名（geocorona，terrestrial corona）。
... geochemicalenvironment地球化学环境 geocorona地冕 geodesyandgeodynamics大地测量学和地球动力学 ...
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“狂欢式”是“狂欢节”最主要的仪式，即“笑谑地给国王加冕和随后的脱冕”。
"Carnival ritual" is the main ritual of carnival, which is "Putting on crown and taking off crown banteringly ".
而其实杨冕很清楚，标准是没有真理的，所以他很谦虚地给他的新作品命名为“2003年杨冕眼中的‘标准’”。
In fact, Yang Mian clearly knows that there is no truth about standards. So he modestly named his new works "Yang Mian's standard Viewpoint, 2003".
为了解释各类黑洞吸积盘系统中观测到的硬X射线发射，也为了完善我们的模型，使之更好地解释X射线天文现象，我们在3.4节引入盘冕。
In order to explain the hard X-rays observed in the BH-disc systems, as well as to make our model more self-consistent, corona is introduced in Sec. 3.4.
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