英语词汇p.p.m.怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	p.p.m.
释义	ppm, p.p.m., PPM abbr.parts per million 百万分之…,百万分率
随便看	nonsense codon Nonsense Codons nonsenses nonsense suppressor nonsense syllable nonsense syllables nonsense verse nonsense verses nonsensical nonsensicalities nonsensicality nonsensically nonsensicalness NON SEQ non seq. nonsequential computer non sequitur non sequiturs nonservo nonservo robot nonsexist nonsexists nonsexual nonshorting contact switch nonsighted

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