moon leaves umbra 中文意思是什麼
moon leaves umbra
解釋
月偏食終-
Moon leaves umbra : instant of last external tangency of the moon with the umbra
復圓:月球逐漸離開地球本影,與地球本影第二次外切。 -
" moon leaves umbra " - the time when the moon touches the umbra externally, this is the end of partial lunar eclipse
月球第二次和本影外切時稱為復圓,偏食結束月球離開半影時,稱為半影食終
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