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该机床为我厂在C620型普通车床的基础上改进设计而成的专用车床,已于1963年试制成功,并经有关部门鉴定,精度达到标准。机床没有尾架和
The machine tool for our plant in the C620 ordinary lathe based on the improvement of design from the lathe, in 1963 trial success, and appraised by the relevant departments, accuracy standards. Machine without tailstock and