管线测量 meaning in English
pipeline survey
Examples
- In addition , the paper designs a bottom database model , selects a multi - aim strategy combining files with known data , and establishes dual interaction data model that has explicit conceptual structure and directly aims to geographic objects , and provides backing up enquiry language ( g - sql ) . simultaneously , after analyzing and studying methods available for the under pipelines , the paper constructs survey adjustment calculation model , and according to the model , checks the survey of under pipelines . the results indicate that the model is suitable to actual requirement because it greatly increase calculation speed , meeting calculation accuracy requirement
在此基础上,对系统的底层数据模型进行设计,选择了文件与成熟数据库相结合的混合策略,并兼顾面向对象的数据库( oodb )和可扩充数据库( edb )的特点,建立了一个概念层次清晰、面向地理对象实体的双层语义数据模型以及支持模型的查询语言g - sql ,同时对地下管线的各种测试方法进行分析研究,建立了地下管线测量平差计算模型,并以此对所勘测的地下管线进行核算,计算结果表明,计算模型不仅大大提高了核算的速度,同时在计算精度上也符合核算的要求,是符合实际要求的关于测量平差计算的模型。