...关键性技术、制度、经济和文化变量上长期变化甚微，是希克斯（1969）所说的习俗经济，或“周而复始的经济”（the circular flow），传统农耕经济展开的过程是理性为自然立法的过程，因而是农民具保守倾向。
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the circular flow of income 本通函的收入流量 ; 循环流动的收入 ; 收入的循环流动
the circular-flow diagram 循环流向图 ; 循环流量图
volume of the circular flow 周转量
The Circular-Flow Model 经济循环流向图
Educated as an engineer, he later converted to economics. His machine, first built in 1949, is meant to demonstrate the circular flow of income in an economy.
这个装置是他于1949年首先建造的，旨在论证一个经济体系中收入是如何循环流动的。
This paper considers numerical simulation of the threedimensional radial flow for the fluid around the desiltor, then the circular flow is added in order to generate the spiral flow.
本文对旋流排淤器周围流体的流动进行了数学模拟，应用有限元方法计算出其周围的流速场和压力场。
In a dusty field in Kitui, eastern Kenya, farmers are being taught how to construct small, semi-circular barriers of earth that control the flow of water, slowing its run-off.
在肯尼亚东部的基图伊，尘土弥漫的田地里，农民们正学着建造小型的环形土坝，以此控制水量、减缓水分流失。
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