This method can reduce Labourintensity, improve working efficiency and ensure the deburring effect of Cu alloy part.
这种方法能降低劳动强度,提高工作效率,较好地保证铜合金零件抛光去毛刺效果。
2
The rice nurseling-seedling-scattering was a new technique of rice cultivation, which has the economic predominance of saving water, reducing labourintensity and production costs.