伞晓刚

Auxiliary theodolite with a target pointing device abutting the light path and the optical path Docking

王晶, 王一凡, 王莹, 2012 .

Large power long range permanent magnetism synchronous linear motor servo drive apparatus

陈学东, 贾文川, 李小清, 2008 .

Pointing device assisting in light path butt joint of theodolite and target and light path butt joint method

王晶, 王一凡, 王莹, 2012 .