infrabarn.低气压infraadv.（书等的）下文；在下面infra-red cataract红外线性白内障infracapillary space毛管间孔隙infracalcarine gyrus舌回inframaxillary index上颌下指数infra-red radiator红外线幅射器infrasonic frequence次声频infraorbital foramen眶下孔infra-red spectrum红外光谱,红外线光谱infra-roentgen ray跨界(射)线, 境界(射)线infrapatellar branch髌下支