Market can rapidly influence entry of factors and make it be utilized effectively . economic entry barriers ca n ' t be simply thought as destructive factors . then the elimination of artificial entry barriers will release much economy energy 市场可以迅速影响要素的进入,使资源得到有效的利用,经济性市场进入障碍不是市场结构效率的破坏性因素,而人为的进入障碍的消除可以保证许多资源能量的释放。