The triangulation of constrained data set is widely used in Geographic Information System (GIS), geo-science, computational geometry, multi-resolution and high precision DTM, et al.
顾及地形特征线的散点域(约束数据域)三角剖分是建立高精度数字地面模型的基础，在GIS、地学分析、计算几何、多分辨率DTM等领域中有着广泛的应用。
Selection pages are often composed of one or more selection components that let the user select criteria by which a data set is viewed by constrained list components.
选择页面通常由一个或多个允许用户选择条件的选择组件构成。受限列表组件根据这些条件查看数据集。
Some data elements are meant to have a set of constrained values (enumeration types as programmers would call them).
一些数据元素必须使用一组约束的值（程序员称之为枚举类型）。
Some data elements are meant to have a set of constrained values (enumeration types as programmers would call them).
一些数据元素必须使用一组约束的值（程序员称之为枚举类型）。
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