名词
中文翻译：回火炉
同义词：
['annealing furnace', 'tempering furnace']
例句：
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1. The engineer used the tempering forge to heat up the metal before shaping it.
工程师使用回火炉加热金属，然后进行成型。
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2. Thesteel was tempered ina tempering forge toimprove its strength and toughness.
钢材在回火炉中回火以提高其强度和韧性。
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3. The forge wasdesigned to produce high-quality steel bytempering it in a controlled environment.
锻铁炉被设计成通过在受控环境中回火来生产高质量钢材。