parts per million翻译
parts per million的基本解释
读音: 美: 英:
百万分之一:一种浓度单位,表示每百万份中有多少份是某种物质。
例句
Want concentration of CO2 in atmosphere lowered from 380 to 350 parts per million.希望将大气中二氧化碳含量由百万分之380降低到百万分之350。A normal amount of CO in your blood is extremely low — zero to eight parts per million.血液中CO普通含量相当低——零至百万分之八。
The level of carbon dioxide in the atmosphere is measured in parts per million (PPM).大气层里二氧化碳含量的测量单位是ppm,即一百万体积的空气中所含二氧化碳的体积数。
短语
defective parts per million 缺陷零件每百万分之几 ; 每百万零件不合格数 ; 杰尔还是每百万缺陷数 ; 每百万缺陷数equivalent parts per million 毫克当量
parts per million range 百万分之几级
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纠错
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