datum line [测] 基准线 ; 基准面 ; 基线 ; 坐标线
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
The feasibility of taking strained-wire as navigating datum line of dummy guide-way was analyzed in laser length measurement system, and working principle of the system was presented.
对以张力金属丝作为激光测长系统虚拟导轨导航基准的可行性进行了分析，给出了系统的工作原理。
Feasibility of a kind of guiding datum line of linear motion in large distance using strained wire is analyzed. The working principle of the system is presented.
对以张力金属丝作为大长度直线运动导引基准的可行性进行了分析，给出了系统的工作原理。
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。
应用推荐