简介:Themachine,asilvermedalwinnerfromthestate,isproducedbytheChangfengMachineryGeneralFactory.TheproductshavebeensoldintheUK,Poland,Australia,Thailand,Singapore,
简介:CertaintyfactorsofearthquakeprecursoryanomalyevidencesCF(E)Zhao-BiZHENG(郑兆)(SeismologicalBureauofAnhuiProvince,Hefei230031,Ch...