“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	space-time geometrical optics spacetime geometry space-time interval spacetime interval space-time inversion spacetime inversion space-time layered coding space time manifold space-time manifold spacetime manifolds space-time metric spacetime metric space time optics spacetime optics spacetime point space time quantization space-time reference systems space-time reversal spacetime reversal space-time singularity spacetime singularity space-time symmetry spacetime symmetry spacetime view spacetime wave

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。