“natural sum”的概念、定义、翻译、参考文献-科学参考

单词	natural sum
释义	natural sum Mathematics natural sum自然和
随便看	helium main-sequence helium method helium-neon helium-neon laser helium optical pumping magnetometer helium-poor star helium production helium refrigerator helium-rich core helium-rich star helium separation system helium shell helium shell flash helium star helium-strong star helium variable helium-weak star helium white dwarf He Liutang helix helix angle helix array helix chain helix-coil transition helix feed

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。