Metallographic change is also researched. The hardened surfaceband depths as well as hardened surfaceband widths were obtained.
获得了金相组织的变化,获取了试验后的硬化层深度和宽度。
2
Imagine an elastic band stretched over the surface of an apple. The band can slowly shrink, moving as though it is slipping from the surface, until it becomes just a dot on the apple's skin.