“杜能环”的概念、定义、翻译、参考文献-科学参考

单词	杜能环
释义	杜能环 Encyclopedia 经济学农业区位论释 Thunen's circles杜能环德国经济学家J.H.von杜能（Johan Heinrich von Thunnen，1783～1850）提出的有关农业生产布局的圈层结构。
随便看	metal-rich cluster metal-rich dwarf metal-rich giant metal-rich globular cluster metal-rich object metal-rich star metal-rubber vibration isolator metal secondary resource metal semiconductor contact metal-semiconductor contact metal-semiconductor contact technology metal semiconductor field effect transistor metal-semiconductor field effect transistor metal-semiconductor field-effect transistor metal-semiconductor field effect transistor, MESFET metal-semiconductor field-effect transistor, MESFET metal-semiconductor junction metal-semiconductor transition metal serrated gasket metals heat treatment metalsmith metal spring gravimeter metal spring vibration isolator metal stable isotope metal star

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。