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学术交流会于1991年3月23日分别在昆明车辆段和昆明东车辆段举行,就米轨、准轨迫导向转向架示范性推广问题进行了
The academic exchange was held on March 23, 1991 in Kunming Depot and Kunming East Vehicle Depot, respectively, and conducted a demonstration on the demonstration promotion of the m orbit and quasi-rail forced guidance bogies