SUB-PPB

英 [SUB-PPB]
美 [SUB-PPB]

中文释义

[=sub-part(s)per billion]十亿分之…

单词分析

单词结构：

SUB-PPB

字母数：7

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  • 单词拼写：SUB-PPB
  • 核心含义：[=sub-part(s)per billion]十亿分之…

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更新时间：2026-03-16 01:43:02