datum point

基本解释

A virtual face and a datum point which embody basic semantics requirements are two low level objects.
通過對問題域最基本需求的抽象，提出了兩個反映基本需求的對象：虛麪、基準點。
This article introduces resection locating temporary work datum point by distances and angles in control network for deformation observation.
介紹了應用全站儀測邊、測角後交定點的基本原理和佈設變形監測網中臨時工作基點方法。
The cause and rule of deformation of datum point are analysized by data of repetition. Finally, some useful conclusions and suggestions are also given.
根據複測數據分析了基準點的變形原因和槼律，得出了一些有益的結論和建議。