英语词汇PPB怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	PPB
释义	PPB abbr.planning-programming-budgeting (system) 计划—设计(程序)—预算制(或法)(一种商业、政府、研究机构的计划方法) [亦作 PPBS] ppb, ppb. abbr.parts per billion [美国英语]十亿分率,十亿分之…
随便看	steam cracking steam crane steam cure steam cured steam curing steam cycle steam-cylinder steam-dome steam drive steam driver steam dryer steamed-up steam emulsion test steam engine steam-engine steam engine indicator steam engines steam-engines steamer steamer basket steamer chair steamer clam steamer clams steamer duck steamer fiddle

英汉双解词典包含483723条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。