Triangulation still constitutes the framework of most existing surveys . 现有的绝大多数测量控制网仍由三角测量系组成。
2.
The layout of a triangulation system may either be a continuous net as in fig. 1-1 . 三角测量系的布设，可采用图1-1的连续网。
3.
The layout of a triangulation system may either be a continuous net as in fig . 1 - 1 三角测量系的布设，可采用图1 - 1的连续网。
4.
Resistance welding - welding current measurement for resistance welding - part 5 : verification of welding current measuring system iso 17657 - 5 : 2005 电阻焊.电阻焊用焊接电流测量.第5部分:焊接电流测量系
