This optical instrument factory is well-known for accurate optometry, fine grinding and good quality.
该光学仪器厂，验光准、磨制精、质量优。 收藏。
The shape precision of form-grinding wheel can directly affect process quality of work-piece surface.
成形砂轮的形状精度直接影响工件表面的加工质量。
It is very useful for us to develop the quality of grinding tee...
这对于提高磨齿质量，加深对磨齿的认识是非常有用的。
It is very useful for us to develop the quality of grinding tee...
这对于提高磨齿质量，加深对磨齿的认识是非常有用的。
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