Resource increasing cost of degressive , exploitation , this is the objective law that resource city avoids hard .
资源递减、开采成本递增，这是资源型城市难以避免的客观规律。
Effectiveness of article subtense border is degressive the rule and limit effectiveness increase by degrees action principle of the rule , formed reason and major distinction to undertake an analysis .
本文对边际效用递减规律与边际效用递增规律的作用原理、形成原因和重大区别进行了分析。
Network economy and traditional economy are running the existence on mechanism and development rule to if dry weight is distinguished greatly , be worn , among them one of it is the limit effectiveness in network economy the limit effectiveness in increasing by degrees the rule replaced traditional economy is degressive the rule .
