quenching and tempering造句怎么写

The principle for the oil-quenching and tempering technology of two high chromium martensitic stainless steels is introduced.

Before 1949, Beijing has heat treatment furnace, salt dissolved by thermocouples means furnace, quenching and tempering, parts of annealing, normalizing, quenching and tempering, carburizing and etc.

Heat treatment shall consist of normalizing normalizing and tempering or quenching and tempering.

The results show that X80 pipeline steel obtains sorbite after quenching and tempering, gets pearlite by normalizing.