primary photometric standard

英 [primary photometric standard]
美 [primary photometric standard]

中文释义

光度基准

单词分析

单词结构：

primary photometric standard

字母数：28

记忆提示

🎯 重点记忆：

  • 单词拼写：primary photometric standard
  • 核心含义：光度基准

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更新时间：2026-02-06 16:29:16