To speed up the hardening process, artificial aging is employed.

加快硬化过程中，人工时效是就业。

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The case hardening process results in gears that have much harder surfaces than cores.

局部淬火处理的齿轮具备比心部组织硬度高的表面硬度。

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'a traditional hardening process gives the leather a beautiful ombre effect,' it continues.

“传统的硬化处理可在皮革上做出精美的云纹。”产品介绍补充道。

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The process of hardening is called sclerosis.

VOA: special.2009.01.06

Free radicals alter cholesterol in a process known as oxidation, which is thought to speed up the hardening of the arteries.

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