The form and change of ecosystem gravity is one of the basic dynamic.
重力是生态系统形成与变化的基础动力之一。
Stability control against sliding is a basic control in design of gravity dam.
抗滑稳定控制是重力坝设计的基本控制。
Based on the basic surface and gravity center concept, the paper presents the surface-digitizing model.
通过引入初始曲面概念，提出了基于物体重心的采样算法模型。
Based on the basic surface and gravity center concept, the paper presents the surface-digitizing model.
通过引入初始曲面概念，提出了基于物体重心的采样算法模型。
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