primary luminous standard

英 [primary luminous standard]
美 [primary luminous standard]

中文释义

发光源标准

单词分析

单词结构：

primary luminous standard

字母数：25

记忆提示

🎯 重点记忆：

  • 单词拼写：primary luminous standard
  • 核心含义：发光源标准

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更新时间：2026-01-29 19:05:29