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城乡梯度
释义
城乡梯度
Encyclopedia
理学
〔城市生态学基本概念〕
释
urban-rural gradient
城乡梯度
生态系统的要素、结构、过程、功能和服务从城市到乡村逐渐变化的趋势。是城市逐步向外扩张形成的空间格局。
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elliptic pencil
elliptic pencil of circles
elliptic pencil of lines
elliptic pencil of rays
elliptic pencil of spheres
elliptic plane
elliptic point
elliptic polarization
elliptic polynomial
elliptic pseudo-distance
elliptic pseudoprime
elliptic quadratic hypersurface
elliptic quadratic surface
elliptic rational function
elliptic ray
elliptic region
elliptic restricted problem
elliptic restricted three-body problem
elliptic Riemann surface
elliptic rotation
elliptic sector
elliptic sheaf
elliptic shifted factorial
elliptic simply connected domain
elliptic sine
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