“research, development and demonstration (RD and D)”概念、定义、翻译-科学时代

单词	research, development and demonstration (RD and D)
释义	请查阅research, development and demonstration
随便看	back back back back back back back back back abutment pressure backacter backacter backacter back action backactor back-alley news back and face effect back and fore back and fore ribs back-and-forth construction back-arc back-arc basin back-arc spreading back azimuth back backing backbar

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。