Field gravity survey was an important method of gravity field model optimization.

野外重力测量是精化全球和局部重力场模型的重要手段之一。

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This paper presents a survey of system model simplification theory.

本文对系统模型的简化理论进行评述。

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Double square root model suits the survey data most.

双平方根模型最适合于实测数据。

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Double square root model suits the survey data most.

双平方根模型最适合于实测数据。

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