constant of nutation [天] 章动常数
nutation n constant 章动常数
the nutation time constant 章动时间常数
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The relation between the error of nutation constant and the corrections of declinations, proper motions calculated by chain method is analysed, and the method to correct this effect is considered.
分析了章动常数误差与用连锁法计算的赤纬、自行改正之间的关系，并考虑了改正这种影响的方法。
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