The text indexes the approaches for improving its quality from basic theory, machines, tools and art innovations, and so on.
从基础理论、机床、刀具和技术创新等角度，指出了提高产品质量的途径。
The text indexes the approaches for improving its quality from basic theory, machines, tools and art innovations, and so on.
从基础理论、机床、刀具和技术创新等角度，指出了提高产品质量的途径。
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