n.回火；人工老化；退火；调和
动词temper的现在分词形式.
All heat treatment by quenching and tempering. 所有萃取和回火的热处理方法。
With increasing tempering temperature, the retained austenite decreases. 回火温度升高，其残余奥氏体量逐渐减少。
奥氏体等温淬火,奥氏体回火
