2 the manner of setting flux of heating power station that according to area of heating was disused . the characteristic parmeter of heating power station was recognized in genetic algorithm , it make the flux of heating power station change followed the area of heating change and make preparations for charging according to area of heating 2废弃了原来采用的按面积确定换热站一次流量的方法，对换热站的热力特性参数进行辨识，使一次供水流量能够动态的跟随各站供热面积的变化，为将来按热收费打下了基础。
From the beginning of 1992 to the end of 1994 , the pla conducted its first large - scale demining operation in the border areas of yunnan province and the guangxi zhuang autonomous region , cleared a total of over one million landmines and explosive devices and destroyed nearly 200 tons of disused or de - activated ammunitions and explosive devices , covering an area of 108 square kilometers with over 170 border trade passes and ports re - opened , and over 30 , 000 hectares of farmland , pasture and mountain forests restored 1992年初至1994年底，中国军队在云南省和广西壮族自治区边境地区，组织实施了第一次大规模扫雷行动，共排除各种地雷和爆炸物100多万枚，销毁废旧弹药及爆炸物品近200吨，完成扫雷面积108平方公里，打通边贸通道、口岸170多个；恢复弃耕地、弃荒牧场和山林3万多公顷。
