By way of improving the superfinishing process,the appearance quality and surface roughness of steel balls,together with the productivity,were increased.

通过改进超精研加工工艺及加工过程,提高了钢球的外观质量和表面粗糙度及生产效率,使该类轴承的性能和寿命有了进一步的提高。

In addition, the product should be kept in temperature and humidity relatively stable environments, overdried or over-wet will cause a change in the appearance quality of books.

不兴此之外，制品该当保不亡在温干度不绝差安定的境况洋，功潮或功干城市引起册本表背质量的保持。