Two effects of technological alternatives of enterprises in the economic society are discussed: the economy scale, and the appended bonus degressive rule.
介绍目前经济社会中影响具体企业进行技术选择的两个因素，规模经济性和边际报酬递减规律。
Chapter 4, firstly, introduces the economic effects of virtual enterprise including economics of scale effects, economics of scope effects and economics of speed effects.
第4章首先介绍了虚拟企业的经济效应，包括规模经济效应、范围经济效应及速度经济效应。
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