na mi cai liao yan jiu shi mu qian cai liao ke xue yan jiu de yi ge re dian qi xiang ying fa zhan qi lai de na mi ji shu bei gong ren wei shi 21 shi ji zui ju you qian tu de ke yan ling yu mu qian he cheng na mi cai liao de fang fa sui ran hen duo dan shi huo de chi cun ke kong ke li jun yun de na mi cai liao reng ran cun zai yi ding de kun nan tan suo fa zhan na mi cai liao she ji yu he cheng de xin tu jing xin fang fa shi xian dui na mi cai liao de chi cun da xiao li jing fen bu yi ji xing mao he biao mian xiu shi de ke kong he cheng ji qi wu li hua xue xing zhi yan jiu reng ran shi na mi cai liao yan jiu ling yu de yi ge zhong yao ke ti ben lun wen cai yong bu tong he cheng fang fa cheng gong he cheng le ji zhong ju you ke kong xing mao de na mi jie gou cai liao tong guo diao jie fan ying wu de nong du fan ying shi jian fan ying wen du yi ji fan ying wu bi li deng shi yan can shu huo de le yang hua wu SnO2 liang zhong tan suan yan BaCO3 SrCO3 he tie suan nie shi mo xi fu he wu deng na mi cai liao bing fen bie yan jiu le ta men de xiang guan xing zhi