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)
Obstetrical trachelotomy产科宫颈切开术
obstetrical hysteroscope产科用宫腔镜
Obstetrical air embolism产科空气栓塞
observability of process过程的可观测性
obstetrical complication产科高危因素