... 粗略定向rough orientation 精密定向precise orientation 逆转点法reversal points method ...
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precise orientation sensor 精确定向传感器 ; 精密定向传感器
Precise orientation algorithm 精确定位算法
Using center of gravity method, the system make the precise orientation of laser spot come true.
系统采用质心法，实现了激光光斑中心精确定位。
The key technique for precise orientation of RS image in GCP scarce region is to obtain the high-precision elements of exterior orientation on the imaging moment.
稀少控制点地区遥感影像精确纠正的关键在于获得拍摄时刻影像的高精度外方位元素。
The PPS orientating system for tunneling can make a precise orientation for TBM and its tunneling direction by provide the related information of tunneling error from TBM to the operator.
TBM的PPS定位、导向系统，可为TBM确切位置和掘进方向定位，为操作手提供TBM偏离轴线的信息。
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