waning gibbous 中文意思是什麼
waning gibbous
解釋
虧凸月-
As it circles our planet, the changing position of the moon with respect to the sun causes our natural satellite to cycle through a series of phases : new, new crescent, first quarter, waxing gibbous, full, waning gibbous, last quarter, old crescent and back to new again
當月球進入地球的半影時，應該是半影食，但由於它的亮度減弱得很少，不易察覺，故不稱為月食，所以月食只有月全食和月偏食兩種。
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