“PPM（portable people meter）”概念、定义、翻译-科学时代

单词	PPM（portable people meter）
释义	新闻与传播词汇手册 PPM（portable people meter）便携式收视测量仪
随便看	national democratic revolution national development bond national difference national dignity National Direct Student Loan （NDSL） national discrimination national disposable income national distribution national drawing national economic budget national economic budget national economic budget national economic complex National Economic Development Council National Economic Development Council (NEDC) National Economic Development Office National Economic Development Office (NEDO) national economic equilibrium national economy national economy national economy informatization national editor national education National Education Association （NEA） national education examination

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。