Cova科瓦粘胶草杆纤维COpref.共同；一起；联合abbr.公司（=company）abbr.郡；县（=county）abbr.指挥官（=Commanding Officer）covariant affine vector共变仿射向量coagulum pyelolithotomy凝血块肾盂切开取石术coagulation experiments混凝试验Cochin-China diarrhea[医] 口炎性腹泻; 类圆线虫病cochlear of sacral bone骶骨岬co-reaction mechanism反应机理Cochlodinium helicoidesn.螺旋旋沟藻CO Istana Security Unit总统府保安组主任Co-seismic subsidence地震地面下沉co-linearity equation共线方程