初亏是发生日食(或月食)的一个阶段,它的出现表明日食(或月食)已经开始。由于月亮自西向东绕地球运转,所以日食总是在太阳圆面的西边缘开始的。当月亮的东边缘刚接触到太阳圆面的瞬间(即月面的东边缘与月面的西边缘相外切的时刻),称为初亏。初亏也就是日食过程开始的时刻。
... 立秋 beginning of autumn 初亏 beginning of eclipse 曙光始 beginning of morning twilight ...
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... 1)total solar eclipse 日全食 2)start of partial eclipse初亏 3)start of total eclipse食既 ...
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初亏、食既、生光和复圆又分别称为第一、第二、第三、第四接触。
Early losses, both fresh, light and health-circular also called the first, second, third, fourth contact.
初亏:太阳与月球第一次外切,太阳光球西面刚切入月球东面的时刻。
Early losses: the sun and the moon, the first cut, just west of the sun-Cut east of the moon moment.
在英国南部地区,由于随着黎明的到来月亮从西边缓缓落下,只能看到起初的部分月相和月全食的开始阶段,即初亏。
From southern parts of the UK, the initial partial phase and the beginning of totality were expected to be visible, with the Moon dropping down into the western sky as dawn approached.
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