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.

本文介绍当前电力工中常用的几种坐标系和高系及其相互换算系。

Paleomagnetic measurements demonstrate that the Jijiagou section which is the stratotype one of Baode Stage of the Neogene in China records 12 normal and 11 reversed polarity zones.

古地磁表明,中国新近系保德阶界线层,西保德冀家沟剖面记录了12个正极性段与11个负极性段。