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ppm

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  • abbr.(=parts per million)百万分率
  • Web百万分之一;浓度;彩色打印速度
abbr.
1.
(=parts per million)百万分率

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
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