parts per million (p

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

中文释义

百万分之容量比, 百万分率, 百万分之几

单词分析

单词结构：

parts per million (ppm)

字母数：23

记忆提示

🎯 重点记忆：

  • 单词拼写：parts per million (ppm)
  • 核心含义：百万分之容量比, 百万分率, 百万分之几

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更新时间：2026-09-21 13:15:13