The quality of steel ball's surface is very important to use of mechanical bearing, so it is necessary to inspect steel ball's appearance all around.
钢球表面质量，是关系到轴承使用性能的重要环节，在生产中需要对钢球的外观进行百分百的监测。
The problems that affect the appearance of the FRP mold surface are discussed in this article, the process and methods of making FRP molds with premium surface quality are introduced also.
本文分析了玻璃钢模具表面出现各种问题的因素，介绍了如何制得高质量玻璃钢模具表面的工艺过程和方法。
The film quality is good, the appearance is gray, the phosphating film surface does not have the ash and the white phenomenon.
膜层质量好，外观呈灰色，磷化膜表面无挂灰、返白现象。
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