method of direction observation in rounds

The method of direction observation in rounds has been adopted to observe horizontal angles and measure distances to and fro,and the measuring engineering control method as well as integrated measuring data has been utilized to process the net adjustment system of the automatic system,so as to carry out calculation of net adjustment for coordinates and ensure that measuring .

结合秦山核电二期3#、4#机组扩建工程,论证了布设独立边角网作为控制网,采用全圆方向测回法观测水平角和往返测距,运用测量工程控制与测量内业一体化数据处理自动化系统的平差程序进行坐标平差计算,可以确保测量成果满足工程的精度要求,并对秦山核电二期3#、4#机组测量控制网的平差方法、精度、结果以及测设的环境条件进行了归纳和总结。

The circular test, which has been carried out for calibration, acceptance test and periodical inspection of CNC machine and CMM was introduced.

对数控机床几何精度评价、机床验收以及定期检验的常用方法———圆测法及其研究成果进行了综述。