primary standard substance

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

中文释义

[化] 基准物; 基准物质

单词分析

单词结构：

primary standard substance

字母数：26

记忆提示

🎯 重点记忆：

  • 单词拼写：primary standard substance
  • 核心含义：[化] 基准物; 基准物质

最近查询：

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更新时间：2026-02-01 10:34:04