名词
中文翻译：硬化剂
同义词：
['hardener', 'hardening agent', 'hardener']
例句：
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1. This chemical is used as a hardening agent in the production of steel.
这种化学物质在钢铁生产中用作硬化剂。
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2. The engineers developed a new hardening agent that can significantly improve the strength of the material.
工程师们开发了一种新的硬化剂，可以显著提高材料的强度。
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3. The hardening agent was added to the paint to make it more durable and resistant to scratches.
向油漆中添加了硬化剂，使其更耐用且不易被划伤。