2025-11-24 18:30 浏览次数 14
abbr. (美)十亿分之一(Parts Per Billion)
1. parts per billion
PPB B溴代十五烷基吡啶
PPB PulsedPowerAmplifier脉沖功率放大器
ppb range十亿分之几级
PPB Polyphthalamide聚邻苯二甲酰胺
PPB ProgrammedPatchBoard程控接线板
PPB MAX以下
ppb Sabbr. 计划,方案制定及预算系统(Planning-Programming-Budgeting System)
PPR PPB PPH要用于生产聚丙烯类
Objective: to assess the PPB rate and outcome and identify risk factors associated with PPB in patients taking clopidogrel.
目的:评估服用氯吡格雷病人PPB的发生率,结果以及相关的危险因素。
In original English language for the 1st impression. The Net Price to the Publisher is at the ratio 1.6 of the PPB cost.
原书第一次印刷的文字形式是英文。出版者支付的凈价依据PPB成本1.6的比率计算。
All drill water to be pretreated with 2 PPB Gluteraldehyde.
所有的鉆井水都要按每桶加两磅的戊二醛作预处理。