单词	iridium rubidium alum
释义	iridium rubidium alum 铱铷矾
随便看	parts palette base part span shroud of blade parts peculiar parts per billion parts-per-billion parts per billion concentration parts per billionppb parts per billion ppb parts per hundred concentration partsper hundred million parts per hundred million parts per hundred million concentration parts per hundred millionpphm parts per hundred parts of rubber parts per million ppm parts per minute partsper thousand parts per thousand parts requisition and order request partss parts sectional vie parts sectional view parts selection matching parts per million parts-per-million