There are many gravity quantities expressed by finite spherical harmonic series expansions in the computing for geopotential.
重力场计算中，经常需要计算以有限阶球谐级数表示的重力场元。
There are many gravity quantities expressed by finite spherical harmonic series expansions in the computing for geopotential.
重力场计算中，经常需要计算以有限阶球谐级数表示的重力场元。
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