observobservation 观察；观测；观察资料OBSabbr.观察(=Observation）abbr.瞭望台（=Observatory）abbr.已废的(=Obsolete)abbr.无线电定向标选择器(=Omnibearing Selector)Obstetric and gynecology妇产科Obstetrical trachelotomy产科宫颈切开术obstetrical hysteroscope产科用宫腔镜obstetrical evisceration胎脏除去术Obstetrical air embolism产科空气栓塞observability inequality观测不等式observability of process过程的可观测性Obstetrical hysterectomy子宫切除observing administration观测管理obstetrical complication产科高危因素