请输入您要查询的英文单词：
单词
fire-protection rating
释义
fire-protection rating
简明释义
防火等级：指建筑材料、构件或设备在火灾条件下的耐火性能等级。
网络释义
短语
1
fire protection rating
耐火等级
双语例句
1
Fire
rating
: H-3
Protection
Grade: IP54 it has wide light distribution curve and its prism glass can reduce glace.
灯具防火等级：H - 3防护等级：IP54灯具配光曲线宽，棱晶玻璃罩减少眩光。
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英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。
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更新时间：2025/10/4 10:43:42