“principal refractive index”概念、定义、翻译-科学时代

单词	principal refractive index
释义	物理学词汇手册 principal refractive index 主折射率
随便看	fervid fervid enthusiasm fervid orator Fery pyrometer FER（film editor's report） Fes FES Fesapo fescennine drama fescue FES (family expenditure survey) FES--FES (family expenditure survey) FES (full electronic shutter) fes oncogene Fe-S protein festa fester Festiniogian Stage Festino festival festival festival Festival International de Jazz de Montreóal Festival of Banishment of Evil Spirits Festival of Fast-Breaking

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。