地月距离
地月距离-
地球赤道上空地月距离的4.425a周期与厄尔尼诺、地球自转、海面变化及地裂缝的关系
The 4.425a Periodic Change of the Distance Between the Earth and the Moon Above the Earth Equator in Relation to El Ni (?) o , Rotation of the Earth , Sea-Level Change and Ground Crack
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达到了地月距离的一半。
It went halfway to the moon .
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约在31×109a至30×109a前，地月距离突然暴胀了10多倍，导致太古代地壳构造活动和月海玄武岩喷发迅速终止；
Then the distance from Earth to Moon had suddenly inflated over 10 times between about 3 1 × 10 9 a and 3 0 × 10 9 a ago , which stopped the mobile period of Archean tectonics and the eruption of the Mare basalt in short order .
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往返的时间间隔精确地算出地月间的距离。
The round-trip travel time pinpoints the Earth-Moon distance .