This paper gives a brief description of various kinds of facilities, reconnaissance and surveying, and design of transitmarks of a swinging ground for magnetic compass adjustment.
本文对磁罗经校正场的设备种类、勘察测量和标志设计等作了扼要的阐述。
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With regard to a low coverage ratio of urban rail transit systems in cities of China, this paper suggests using network marks to deter-mine the spatial layout of rail transit systems.