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THE COVID-19 epidemic has led to the emerging of many new forms of employment that are based on the digital economy.Acco......
随着社会经济的不断进步,现行的发展模式已经越来越明显地呈现出它的弊端.实现西双版纳经济社会的再度繁荣发展,必须走可持续发展......
The 2019 China Information and Communication Conference, hosted by the China Institute of Communications, was successful......
A Factor Analytic Model of Economic Growth Basing on Domestic and Foreign Resource and a Positive St
The most popular and traditional method to analyze the source of economic growth is created by Robert. M.Solow, but it h......
目前,好多生态学术语在社会各界广泛使用,足见生态学知识的普及,但是,却存在许多概念混淆不清而乱用的现象。在我国生态学家马世骏......
本文结合空气源热泵和壁挂炉的运行特性,分析家庭采暖中的因素。从性能系数、供水温度、采暖负荷、经济性等方面进行对比,做出量化......
