hardening yield value

例句：

1. 1. The steel is hardening at a high temperature.
   钢材在高温下正在硬化。
2. 2.The material has a hardening yield value of 400 MPa.
   该材料具有400 MPa的硬化屈服值。
3. 3. The engineer calculated the hardening yield value for the new design.
   工程师计算了新设计中的硬化屈服值。