出典:Wikipedia
出典:『Wikipedia』 (2011/06/16 03:40 UTC 版)
An equator is the intersection of a sphere's surface with the plane perpendicular to the sphere's axis of rotation and containing the sphere's center of mass. The capitalized term Equator refers to the Earth's equator.
the magnetic equator
a parallel
the earth's axis
the negative pole
the negative pole―the cathode
the quarter
the counter
緯度.
the middle finger
the horizontal axis
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