Meanwhile, the method that tests the focus running error by using JSJ integrating inspection instrument through an example of theodolite is introduced.

分析了大地测量仪器望远镜调焦运行误差产生的原因，并以经纬仪为例，介绍一套利用JSJ综合检验仪对其调焦误差进行检定的方法。

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The JSJ website is developed by the Division of Supervision and Management of the Department of International Cooperation and Exchange of the Chinese Ministry of Education to release information related to cross-border higher education in China.

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