单词 | magnetosphere |
释义 | magnetosphere [mag´`nēd·ǝ´sfir] GEOPHYSICS The region of the earth in which the geomagnetic field plays a dominant part in controlling the physical processes that take place; it is usually considered to begin at an altitude of about 60 miles (100 kilometers) and to extend outward to a distant boundary that marks the beginning of interplanetary space. |
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