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1·Given four basic parameters of a reference ellipsoid, the normal potential field generated by the ellipsoid could be determined by using conventional method.

给定参考椭球体的四个基本参数，椭球体产生的外部正常重力位场可利用传统方法确定。

2·The ellipsoid model is the first part of a spatial reference system definition.

椭圆体模型是空间引用系统定义的第一部分。

3·The ellipsoid multifunctional industrial emergency water tower and construction technics are described in this paper, which would provide a reference for the actual engineering.

本文介绍了一种椭球形多功能工业事故水塔及其施工工艺，可为实际工程提供借鉴。