The paper reports on a study of datum line s errors, in addition to comparing geodesic line with short range line while expanding various kinds of shell plates and analysis error incurring reasons and error s distribution law.
本文把不同外板展开方法的测地线和短程线进行比较，分析其误差产生的原因和分布规律，从而来研究外板展开准线的几何精度。
Methodology of project Baseline defination in Clean Development Mechanism;
清洁发展机制中项目基准线确定方法
Research on baseline setting methods of Clean Development Mechanism in cement industry;
清洁发展机制(CDM)基准线设置方法在水泥行业内的研究
This paper describes the methods for setting baselines for evaluating of electric power projects and case studies.
介绍国际上评估发电项目减少温室气体排放所用的基准线评估法及其应用案例。
Presently,it is mainly through human s observation for the road marking vehicle to spray marks along the datum line.
目前的道路划线车,主要通过人的视觉观测,从而操作划线车使其沿基准线喷涂标线,由于驾驶员的视觉疲劳容易出现划线车跑偏的现象。