| 单词 | plasma mantle | 
| 释义 | plasma mantle [`plaz·mǝ `mant·ǝl]  GEOPHYSICS A thick layer of plasma just inside the magnetopause characterized by a tailward bulk flow with a speed of 60 to 120 miles (100 to 200 kilometers) per second and by a gradual decrease of density, temperature, and speed as the depth inside the magnetosphere increases.  | 
	
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