For sections heavier than 20 mm the depthofhardening, i. e. the distance from the surface to the 550 HV level, is about 4 mm.
因为比20毫米变硬的深度沈重的区段,也就是距离从表面到550 HV水平,是有关4毫米的事。
2
The micro-structure ofhardening layer and motherly-body is different, which provide passibility for measuring the depthofhardening layer by supersonic ware.
由于硬化层与基体的微观结构不同,也就为超声波测量硬化层的深度提供了条件。
3
The class covers security hardening, customizing authentication, integration, single sign on, and a variety of other related topics in depth.