The plan, methods and principle of azimuth survey was introduced for Urumqi geomagnetic station marker.

介绍了乌鲁木齐地磁台测量标志方位角的方案、测量方法、原理。

youdao

The plan, methods and principle of azimuth survey was introduced for Urumqi geomagnetic station marker.

介绍了乌鲁木齐地磁台测量标志方位角的方案、测量方法、原理。

youdao