名词中文翻译
中文翻译：硬化
同义词：
['hardening', 'hardening process']
例句：
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1.The steel is undergoing a hardening process to increase its strength.
钢材正在经历一个硬化过程以增加其强度。
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2. As the material cools, it starts to harden.
随着材料冷却，它开始变硬。
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3.The metal has been subjected to high-frequency currents for several hours, causing it to harden.
金属已经经受了高频电流几个小时，导致它变硬。