DEFC直接乙醇燃料电池defabbr.防御（=defense）abbr.延缓的（=deferred）abbr.定义（=definition）abbr.明确的（=definite）defoameragentn.去沫剂DEF defoliant脱叶磷deflagratableadj.抽去的defurfuration糠样脱屑defibrillatorn.电震发生器；【医】除颤器deforestationn.森林开伐；滥伐森林defomfingbody变形体deflating cap开关帽defocculation抗絮凝defocus value散焦值