淬火的英文：
quench
temper (e.g., steel)
harden by quenching

参考例句：

semi - hardening
半马氏体淬火

To cool(hot metal) by thrusting into water or other liquid.
将…淬火将(烧热的金属)伸入水或其它液体中使冷却

hardened and tempered
淬火与回火的

Hardening means making harder.
淬火就是促使变硬。

quenching medium
淬火剂;骤冷剂

"Three. They are hardening, temper and anneal. "
三种。它们是淬火、回火和退火。

Why shall harden steel be anneal?
淬火钢为什么要退火呢?

Anneal means make harden steel soft and remove brittleness.
退火就是使淬火钢变软并消除其脆性。

Can we control the hardness of the steel when it is harden?
我们能够在钢淬火时控制它的硬度吗?

Anneal means making harden steel soft and removing brittleness.
退火就是使淬火钢变软并消除其脆性。

quench是什么意思：
v. 解渴；熄灭；结束，平息

Water afar quenches not fire
远水难救近火

The bustle and the talking quenched.
喧闹声与谈话声平息下来。

Water will quench a fire.
水可以灭火。

temper是什么意思：
n. 性情；脾气；心情；回火
v. 使缓和；调和；（使）回火

hardened and tempered
淬火与回火的

I was in a flaming temper.
我正怒气冲天。

She is a girl of sweet temper.
她是个性情温柔的姑娘。

steel是什么意思：
n. 钢铁；钢制品；坚固
adj. 钢制的；钢铁业的；坚强的
v. 钢化；使冷酷

Good adhesion to steel, galvanized steel and aluminum alloy.
对钢铁、锌钢材及铝合金有良好的附着力。

Steel and gasoline are industrial products.
钢和汽油是工业产品。

The towers are surfaced with steel plates.
在塔面上加了一层钢板。