1、三杆分度仪
...三差相位观测triple difference phase observation三杆分度仪three-arm protractor三角测量triangulation ...
2、[水运]三杆定位仪
...bevel protractor 量角规,斜量角规...protractor scale 分度器,半圆规,量角...three-arm protractor 三杆定位仪,三臂分度...
3、三臂分度器
... three-arm pickling machine 三摇臂式酸洗机 three-arm protractor 三臂分度器 three-axis gyroscope 三轴陀螺仪 ...
4、三臂定位器
... 位置差 station error 三臂定位器 station pointer; three-arm protractor 变压计 statoscope ...