The definitions of the binary tree plane coordinate net and the plane coordinate net binary tree, and their basic theorems are given in this paper.
二叉树平面坐标网、平面坐标网二叉树的定义及其基本定理在本文给出。
They form a three-parametric, orthogonal net and may be chosen as coordinate lines of a special, curvilinear coordinate system.
它们形成三参数正交网，可以把它们选作特殊曲线坐标系的坐标线。
This paper introduces a BASIC program for coordinate adjustment of tri an gulation net.
本文介绍一个三角网坐标平差的BASIC程序。
The role is a social mask of individual, an individual coordinate positioning in special social relations, and also a crunode of the net of social relations.
角色是个体的社会面具，角色是个体在特定社会关系中的坐标点，也是社会关系网的结点；
In the adjustment program of triangulation net by directional condition observation, to apply the formulas of polar coordinate condition is a new way.
本文介绍了三角网按方向条件观测平差的电算程序中，应用极坐标条件式的新方法。
Contact Huludao city Jianchang 220kv high-voltage lines renovation project, discussed the application of data communication, coordinate system, GPS net adjustment in the project.
联系葫芦岛市建昌220KV高压线路改造工程，论述数据传输、坐标系的建立、GPS的平差理论在实际工程中的应用，并给出工程最终应用成果。
Contact Huludao city Jianchang 220kv high-voltage lines renovation project, discussed the application of data communication, coordinate system, GPS net adjustment in the project.
联系葫芦岛市建昌220KV高压线路改造工程，论述数据传输、坐标系的建立、GPS的平差理论在实际工程中的应用，并给出工程最终应用成果。
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