“D--R &--D (Research and Development)”概念、定义、翻译-科学时代

单词	D--R &--D (Research and Development)
释义	电子商务词汇手册 R & D (Research and Development) 研究与开发
随便看	down-hole hammer drilling down-ladder operator downland downland downland down land downland down lead down left down left--down left（DL） down left（DL） down limit downlink downlink downlink downlink download download download down log down-market down market downmarket downmarket consumer down paper feed automatic packing machine

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。

R & D (Research and Development)