Couf曹夫COpref.共同；一起；联合abbr.公司（=company）abbr.郡；县（=county）abbr.指挥官（=Commanding Officer）coelom theory体腔说co-security共同保证Coarbon steel碳钢cofree module上自由模Coase theorem科斯定理covalent link共价键coevaporation同时蒸发coccinic acid胭脂虫酸coking cyclic焦化循环co simulation协同仿真