对淬火介质的选择，淬火过程的控制，以及回火处理也作了介绍。

The selection of cooling medium, control of quenching process, as well as tempering treatment was also described.

youdao

对淬火介质的选择，淬火过程的控制，以及回火处理也作了介绍。

The selection of cooling medium, control of quenching process, as well as tempering treatment was also described.

youdao