ppm (part per million)

英 [ppm (part per million)]
美 [ppm (part per million)]

中文释义

百万分之一 (10-6)

单词分析

单词结构：

ppm (part per million)

字母数：22

记忆提示

🎯 重点记忆：

  • 单词拼写：ppm (part per million)
  • 核心含义：百万分之一 (10-6)

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更新时间：2026-02-05 13:59:49