sound insulation grading

英 [sound insulation grading]
美 [sound insulation grading]

中文释义

隔声等级

单词分析

单词结构：

sound insulation grading

字母数：24

记忆提示

🎯 重点记忆：

  • 单词拼写：sound insulation grading
  • 核心含义：隔声等级

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更新时间：2026-01-29 21:30:41