Heat-Treatment of Steel 钢的热处理
heat-treatment of steel wire 钢丝热处理
heat treatment process of steel 钢的热处理工艺
How many operations are there in the heat treatment of steel?
钢的热处理有多少种操作方法？
There are three main operations in the heat treatment of steel: hardening tempering and annealing.
钢的热处理操作主要有三种，即：淬火、回火和退火。
There are three main operations in the heat treatment of steel: hardening, tempering and annealing.
钢的热处理操作主要有三种，即：淬火，回火和退火。
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