secondary photometric standard

英 [secondary photometric standard]
美 [secondary photometric standard]

中文释义

二次测光标准

单词分析

单词结构：

secondary photometric standard

字母数：30

记忆提示

🎯 重点记忆：

  • 单词拼写：secondary photometric standard
  • 核心含义：二次测光标准

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更新时间：2026-02-20 20:12:42