水平角测量(horizontal angle observation) 1、经纬仪(theodolite,transit)的安置 2、瞄准方法、整平方法 3、测回法 5、方向观测法 课后记： 5 阳泉职业技术学院教案 2006 ...
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从一点到目标的方向，表示为从北开始顺时针测量的一个水平角度。
The direction to an object from a point, expressed as a horizontal angle measured clockwise from true north.
本文简述了路桥施工测量中放样的四种方法：已知距离的放样，已知水平角的放样、已知高程的放样、平面点位的放样。
Four methods of sampling in road and bridge construction are introduced in this paper. They are sampling of known distances, known horizontal angles, known elevations and plane point position.
方位角观察者通过测量所具有的水平角度，从某一参考方向顺时针测量，如从北部或从参考天体处，通常从北极星。
The horizontal Angle of the observer's bearing in surveying, measured clockwise from a referent direction, as from the north, or from a referent celestial body, usually Polaris.
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