名词
中文翻译：淬硬区
同义词：
['hardened region', "hardened zone例句：1. The steel was quenched to a hardened region before being used.（钢材在被使用前被淬硬到硬硬的区域。）2. The engineer found the quenched region to be unstable during testing.（工程师发现测试期间淬硬区域不稳定。）3. The quenched region is crucial for the material's strength and durability.（淬硬区域对于材料强度和耐用性至关重要。）"]
例句：
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1. The steel was quenched to a hardened region before being used.
钢材在被使用前被淬硬到硬硬的区域。
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2. The engineer found the quenched region to be unstable during testing.
工程师发现测试期间淬硬区域不稳定。
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3. The quenched region is crucial for the material's strength and durability.
淬硬区域对于材料强度和耐用性至关重要。