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Operating principle of the ZD6 electric switch
SHEN Huai-mi;JIN Yong-liang;XU Qin-bi;YUE Qiu-ming;Jinan Railway Bureau Yishu Railway Construction Headquarters;China Railway 10 Bureau Electricity Engineering Company;Jinan Railway Bureau Shandong Engineering Construction Group Company;Jinan Railway Bureau Qingdao Branch Signal Technology Services Section;
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