名词
中文翻译：表面淬火
同义词：
['surface hardening', 'surface tempering例句：1. The process of surface quenching is crucial for the quality of the steel.（表面淬火过程对于钢的质量至关重要。）2. During the manufacturing process', 'surface quenching is used to improve the strength and toughness of the material.（在制造过程中，表面淬火被用来提高材料的性能强度和韧性。）']
例句：
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1. The process of surface quenching is crucial for the quality of the steel.
表面淬火过程对于钢的质量至关重要。
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2. During the manufacturing process, surface quenching is used to improve the strength and toughness of the material.
在制造过程中，表面淬火被用来提高材料的性能强度和韧性。
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3. The engineer explained that surface quenching was necessary to prevent the formation of internal stresses in the metal.
工程师解释说，表面淬火是必要的，以防止金属内部应力的形成。