单词 | semiregular variables |
释义 | semiregular variables [¦sem·i`reg·yǝ·lǝr `ver·ē·ǝ·bǝlz] ASTRONOMY Variable red giant stars whose variation in brightness is repeated, but whose period and light curve may vary considerably from one cycle to the next; they have absolute magnitude of about 0 or -1 and quasi-periods of from about 40 to 150 days. |
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