irion.<东非>依丽什锦菜(用玉米、豆子、青菜、豌豆等拌合而成)IRabbr.信息检索(=information retrieval)irreducible character degree不可约特征标级数Irreducible umbilical hernia不可还纳性脐疝irreducible cluster integral不可约集团积分irreversibility of evolution进化的不可逆性irreducible symmetric domain不可约对称域irrigation on the film mulch膜上灌Irrigation and fertilization水肥irredundant prime closed set[计] 非相容素闭集合IR imaging Guidance Missiles红外成像制导Iridencleisis and iridotasis虹膜箝顿术和虹膜展开术