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...
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...
ppb和ppm是哪个..然而随着科技发展及大众环保意识的增强,"PPM"常常被人们用于表述空气中成分比的变化或是微量元素的测试比较等等场合当中去;两者都在日常应用环境中具有很重要的角色
检测模块可直接输出4- 20mA模拟电流信号或R S 4 分享1赞 气体检测仪吧 skyeaglee0911 东日瀛能气体检测仪 针对复杂工况 免费做方案 分享20赞 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-...
Enter # ofParts-per Million Convert1ppmto other unitsResult Parts-per Million to Parts-per Billion (ppm to ppb)1000 Parts-per Million to Parts-per Trillion (ppm to ppt)1000000 Parts-per Million to Parts-per Quadrillion (ppm to ppq)1000000000...
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...
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,...
Enter # ofParts-per Billion Convert1ppbto other unitsResult Parts-per Billion to Parts-per Million (ppb to ppm)0.001 Parts-per Billion to Parts-per Trillion (ppb to ppt)1000 Parts-per Billion to Parts-per Quadrillion (ppb to ppq)1000000...
Convert1pptto other unitsResult Parts-per Trillion to Parts-per Million (ppt to ppm)0.000001 Parts-per Trillion to Parts-per Billion (ppt to ppb)0.001 Parts-per Trillion to Parts-per Quadrillion (ppt to ppq)1000 Parts Perconversions