“刀（形）开关”概念、定义、翻译-科学时代

单词	刀（形）开关
释义	请查阅刀开关--闸刀开关--刀（形）开关
随便看	principal quantum number principal quantum number principal rafter principal ray principal ray principal reaction principal refractive index principal refractive index principal residence principal role principal room principal root principal scale principal series principal series principal set principal shareholder principalship principal shock principal species principal strain principal strain principal strain principal strain principal stress

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。