A complete data model should be based on these three dimensions: ground, position, and elevation.

一个完全数据模型应该以这三个尺寸为基础：基准、方位和高度。

youdao

A complete data model should be based on these three dimensions: ground, position, and elevation.

一个完全数据模型应该以这三个尺寸为基础：基准、方位和高度。

youdao