| 单词 | sunspot cycle |
| 释义 | sunspot cyclenoun Astronomy.the cycle, averaging in duration slightly more than 11 years, in which the frequency of sunspots varies from a maximum to a minimum and back to a maximum again. Compare solar cycle. Words nearby sunspot cyclesunsick, sun sign, sunspace, sun spider, sunspot, sunspot cycle, sunspots, sun star, sunstone, sunstroke, sunstruck Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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