名词短语中文翻译
中文翻译：硬化和热处理
同义词：
['硬化处理，热处理例句：1. The steel is hardened before being used in the machine.（钢材在使用前需要经过硬化处理。）']
例句：
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1. The steel is hardened before being used in the machine.
钢材在使用前需要经过硬化处理。
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2.The metal was tempered to increase its strength and toughness.
金属被热处理以提高其强度和韧性。
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3. The process of hardening and tempering is crucial for the quality of the final product.
硬化和热处理过程对于最终产品的质量至关重要。