ppb: Parts Per Billion, 十億分之一,10−9 ppt: Parts-Per-Trillion,兆分之一,10−12 ppq: Parts-Per-Quadrillion,千兆分之一,10−15 DPMO:Defect Per Million Opportunity,百萬不良率,也就是指抽樣一百萬個樣品檢查出現不良品的機率,當抽樣數越大,其結果就越趨近於母體的實際不良率。 下面表格列出各...
ppq is rather a theoretical construct than a useful thing, chances are you will never see it in use. ppt can be confusing as it is sometimes used for parts per thousand - if you want to use "part per" notation in this case it is safer to use ppth abbreviation (but I doubt you wi...
•ppm ↔ ppb[part per billion] •ppm ↔ per[percentage] •ppm ↔ part per thousand •ppm ↔ ppt[part per trillion] •ppm ↔ ppq •ppm ↔ ug/kg[microgram/kilogram] •ppm ↔ ug/mg[microgram/milligram] •ppm ↔ ng/kg[nanogram/kilogram] ...
part per quadrillion ppq 10−15 rarely used part per thousand, or permille ppt, or ‰ 10−3 The mole fraction of CO2 in the atmosphere is 0.3 ‰, or 0.3 ppt Use percent or ppm with a power of ten. Avoid using ppt which is clearly ambiguous. part per hundred million pphm 10...
广东省瓶装饮用水行业协会有关专家指出,对于桶装水,消费者常常忽视了桶的质量,其 分享回复1 数词吧 shinbade ppm,ppb,ppt,ppqppm (parts-per-million, 10–6),ppb (parts-per-billion, 10–9),ppt (parts-per-trillion, 10–12) ppq (parts-per-quadrillion, 10-15). 分享回复赞 水处理设备吧 鱼台胜...
ppb: Parts per billion (109) ppt: Parts per trillion (1012) ppq: Parts per quadrillion (1015) Converting ppt to ppm To convert from parts-per trillion (ppt) to parts-per million (ppm), you need to understand the relationship between the two units. Since a trillion is 1012 and a milli...
ppb - parts per billion (1 / 1,000,000,000 or 10-9) ppt - parts per trillion (1 / 1,000,000,000,000 or 10-12) ppq - parts per quadrillion (1 / 1,000,000,000,000,000 or 10-15) An alternatively mass related unit to measure larger concentration levels is weight percent wh...
• ppb ↔ part per thousand • ppb ↔ ppt [part per trillion] • ppb ↔ ppq • ppb ↔ ug/kg [microgram/kilogram] • ppb ↔ ug/mg [microgram/milligram] • ppb ↔ ng/kg [nanogram/kilogram]• ppb ↔ ng/ug [nanogram/microgram] • ppb ↔ ng/g [nanogram/...
• ppm ↔ ppb [part per billion] • ppm ↔ per [percentage] • ppm ↔ part per thousand • ppm ↔ ppt [part per trillion] • ppm ↔ ppq • ppm ↔ ug/kg [microgram/kilogram] • ppm ↔ ug/mg [microgram/milligram] • ppm ↔ ng/kg [nanogram/kilogram]...
我今天换了个 分享回复1 水处理设备吧 鱼台胜王水处理 反渗透(纯净水) 设备在厂安装待发货 适用范围: 热力、火力发电锅炉 、电子工业生产、 医药工业 、 饮料(含酒类) 海水、苦咸水 石油化工 业如化工反应冷却水、化学药剂、化肥及精细化 分享8赞 数词吧 shinbade ppm,ppb,ppt,ppqppm (parts-per-million,...