The REFPROP 9.0 refrigerant calculation program was used to analyze and simulate the thermophysical properties of R22 and R417 A refrigerant mixture at four different mixing ratios,and the theoretical cycle characteristics at different ratios were calculated and the optimal ratio of 7:3 was obtained....
目前我国空间规划体系内容重叠,各类规划互不衔接,导致同一城市空间管治策略的混乱和无序.在中央提出建立国家空间规划体系的政策背景下,各个省,市亟需探索建立各具地方特色的空间规划体系.基于重庆省域架构,直辖体制的特殊市情,本文重点梳理了重庆近年来在完善"五级三类"空间规划体系,多规合一规划实践方面的创新和探索,...
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