英语短语词组词汇p.p.m.的音标、释义、翻译、用法及例句-英语短语词组词典-老街网

短语	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	copper blight copper blue copper bracelet copper brazing copper bromide copper cable copper captain copper carbonate copper chloride copper chromate copper colour copper-coloured copper-coloureds copper converter copper cyanide copper dish gum coppered copper fluoride copper gluconate copperhead copperheads copper hydroxide coppering copperings copper iris

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