Kaidi Electric Power and Wuhan Kaidi Electric Power Engineering Company's controlling shareholder, are Wuhan Kaidi Holding Investment Co. 凱迪電力和武漢凱迪電力工程公司的控股股東均為武漢凱迪控股投資有限公司。
In the engineering survey in current electric power, several kinds of coordinate system and elevation in common use and their mutual matrixing relation are introduced. 本文介紹當前電力工程測量中常用的幾種坐標系和高程系及其相互換算關係。
