coakn.扣榫；栓销(木工)凹榫槽COpref.共同；一起；联合abbr.公司（=company）abbr.郡；县（=county）abbr.指挥官（=Commanding Officer）co-occurrence matrices共生矩阵Coulomb's earth pressure经典神经网络Coulomb Stress Variation库仑应力变化Coenotephria perplexarian.乌斑珂尺蛾co-precipitated method共沉淀法co -existence relation共生关系co-ordinate conversion坐标轮换Coelioxys cancavogenalisn.凹颊尖腹蜂Co - occurrence Matrix共生矩阵coagulative preciptation凝结沉淀