parts per million
短語(yǔ)詞組
- parts s per million 百萬(wàn)分率;百萬(wàn)分之
- parts w per million 百萬(wàn)分之一
- parts per million concentrationppm 濃度
- defective parts per million 缺陷零件每百萬(wàn)分之幾;每百萬(wàn)零件不合格數(shù);杰爾還是每百萬(wàn)缺陷數(shù);每百萬(wàn)缺陷數(shù)
- equivalent parts per million 毫克當(dāng)量
- defect parts per million 百萬(wàn)分之不良品數(shù)
- M Parts per million 百萬(wàn)分之
- parts per million range 百萬(wàn)分之幾級(jí) 返回 parts per million