universal primary standard substance

英 [universal primary standard substance]
美 [universal primary standard substance]

中文释义

通用基准物

单词分析

单词结构：

universal primary standard substance

字母数：36

记忆提示

🎯 重点记忆：

  • 单词拼写：universal primary standard substance
  • 核心含义：通用基准物

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更新时间：2026-02-02 03:57:53