DEFKn.二极管发射极输出器逻辑电路defabbr.防御（=defense）abbr.延缓的（=deferred）abbr.定义（=definition）abbr.明确的（=definite）defoathering machine除羽毛机,打毛机Defrisobski mutation德弗索伯斯基氏突变defibrillator system除颤监护系统Defibrillator paddle除颤器垫defocusing technique去聚焦技术defecation promotion导法, 导便defatted peanut meal脱脂花生粕defoamingperformance消泡性能defibrinogen therapy降纤治疗defatted milk powder脱脂奶粉