| 单词 | plasma tail |
| 释义 | plasma tail [`plaz·mǝ `tāl] ASTRONOMY A comet tail that is composed primarily of electrons and molecular ions, the dominant visible ion being positively ionized carbon monoxide, and that is generally straight, with a length in the range from 0.62 × 107 to 0.62 × 108 miles (1 × 107 to 1 × 108 kilometers). |
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