名词
中文翻译：回火合金
同义词：
['temper medium', 'tempering medium']
例句：
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1.The steel was tempered to increase its toughness and strength.
钢材被回火以提高其韧性和强度。
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2. The austempering process is essential for the quality of the final product.
回火工艺对于最终产品的质量至关重要。
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3. Austempering is commonly used in the manufacturing of high-strength steel parts.
回火工艺常用于制造高强度钢部件。