secondary distribution network

bi-level programming secondary distribution network model based on price elasticity

基于价格弹性的双层规划二级分销网络模型

While revolutionary character has not taken place and change in the overall pattern, secondary area commercial pattern take place some change, more rationally distribution of the commercial network. A corresponding one is the development of the cities and towns to develop with handicraft industry, commerce.

在总体格局没有发生革命性变化的同时，次级区域内部商业格局发生了一些变化，商业网点的分布更趋合理。与手工业、商业发展相对应的是城镇的发展。

the solution pumps hot water from a power plant through underground pipes to heat exchangers which heat up water in the secondary distribution network and feed it into consumer radiator systems.

该解决方案把热水从发电厂抽上来，通过地下管道至热交换器，热交换器在二级分配网络上将水加热，然后将它流入用户的散热器系统。