“研究与开发”概念、定义、翻译-科学时代

单词	研究与开发
释义	经济学词汇手册 R & D (research and development) 研究与开发
随便看	horror story horror-struck horror vacui horse horse horse horse horsebane horse battery horse bean horse cavalry horse chestnut horse chestnut horse chestnut horse chestnut family horse clam horse dance horse dance horse-drawn artillery horseflesh horse gun horsehair worm Horse-head Avalokiteśvara Horsehead Nebula horse hoof

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)