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章动常数
释义
章动常数
Encyclopedia
理学
天文常数系统
释
nutation constant
章动常数
真天极绕平天极在大约18.6年内描绘出一个椭圆,称为章动椭圆,其半长轴的大小称为章动常数。它是天文常数之一。
Astronomy
nutation constant; nutational constant; constant of nutation
章动常数
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