| 单词 | neutrosphere |
| 释义 | neutrosphere [`nü·trǝ´sfir] METEOROLOGY The atmospheric shell from the earth's surface upward, in which the atmospheric constituents are for the most part un- ionized, that is, electrically neutral; the region of transition between the neutrosphere and the ionosphere is somewhere between 42 and 54 miles (70 and 90 kilometers), depending on latitude and season. |
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