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首页 > 英汉词典 > parts per billion (ppb)

parts per billion (ppb)

英 [parts per billion (ppb)]
美 [parts per billion (ppb)]

中文释义

十亿分之几, 十亿分率

单词分析

单词结构:

parts per billion (ppb)

字母数:23

记忆提示

🎯 重点记忆:

  • 单词拼写:parts per billion (ppb)
  • 核心含义:十亿分之几, 十亿分率

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更新时间:2026-04-11 22:19:57

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