“secondary road”概念、定义、翻译-科学时代

单词	secondary road
释义	交通运输工程词汇手册 secondary road （城市）次干路
随便看	variate variate-difference method variate transformation variation variation variation variation variation variation variation variation variation variation variation variation variation variation variation variation variation variation variation variational variational calculus variational calculus

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。