名词
中文翻译：火炬硬化
同义词：
['torch hardening', 'heat treatment']
例句：
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1. The process of torch hardening is essential for the production of high-quality steel.
热处理过程对于生产高质量钢材至关重要。
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2. During torch hardening, the material undergoes a significant change in its physical properties.
在热处理过程中，材料会经历显著的物理性质变化。
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3. The company uses torch hardening to improve the durability and strength of its products.
该公司使用热处理来提高其产品的使用寿命和强度。