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CWR Maintenance by MTT in Nanchang Railway Administration
wei hui xiao changbin wang lihua(1.school of mechanic & electronic engineering; nanchang university; jiangxi nanchang 330031; 2.dept.of automotive engineering; blue sky university; jiangxi nanchang 330098; 3.nanchang railway administration; jiangxi nanchang 330002)
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Study on Development of National Coordinate
wang hong long wenxing(1.mapping courtyard; sichuan branch; china national geological exploration center of building material industry; sichuan chengdu 610051; 2.institute of engineering surveying; sichuan college of architectural technology; sichuan deyang 618000)
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