datum line differential [机] 基准线差
Y-datum line Y 基准线
datum line beam 基准梁
armament datum line 军械基准线 ; 武器基准线
the datum line of sunlight 日照基准线
central datum line 中心基准线
sunlight datum line 日照基准线
rigging datum line 装配根据线
It also establishes the evaluation method for measuring the sustainable development capacity of CDM projects by taking the datum line as a reference and by comparing CDM projects with the datum line projects.
确定了以基准线项目为参照,通过清洁发展机制项目与基准线项目进行比较来衡量清洁发展机制项目可持续能力的评价方法。
参考来源 - 清洁发展机制项目可持续发展能力评价体系研究·2,447,543篇论文数据，部分数据来源于NoteExpress
An united space datum line has been given.
给出统一的空间基准线。
A line of punch positions parallel to the Y datum line of a punch card.
基准线平行，在地平面或者基准平面上。
The vertical datum line set up by this system can be used to monitor deformation of the various building.
用这种垂准系统建立的高度较大的垂准基线，可以用于超高层建筑物施工和变形监测。
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