英语词汇“ppb”的翻译、意思、用法、释义-英汉双解词典-修远网

单词	ppb
释义	ppb abbr ① 十亿分之…(parts per billion)
随便看	director directorate directorates director general directorial directories Director of Studies directors director's chair directors general directorship directorships directory directory harvest attack directory service Directory System Agent Directory User Agent Direct PC direct proportion direct reaction directress directresses directrice directrix direct rule 绒毛绒毛浆绒毛浆纤维绒毛膜绒毛运动绒毡层绒线绒绢纸花绒羽绒面革 симбионт симбионт симбиотический симбиотический символ символ символизировать символизировать символизм символизм