“first invariant”概念、定义、翻译-科学时代

单词	first invariant
释义	工程与技术词汇手册 first invariant 第一不变量
随便看	street trader street tree street value Streisand，Barbra strelitzia Strelitzia reginae streltsy strength strength strength strength strength strength strength strength strength strength strength strength strength strength analysis strength at rupture strength contour graph strength count product strength-deformation characteristics

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。

first invariant