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）defecalgesiophobia[医] 便痛恐怖, 排粪痛恐怖defocusing of beam[电] 光束去焦defibrinogen agent去纤维蛋白原剂defluorine methods降氟方法Defilippe's Petreldeflexion attitude偏转姿势defoaming property消泡性能defatted soya meal脱脂豆粕defining challenge特有的挑战defining relations定义关系