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)
obstertric conjugate产科结合径
obstetric depression产科抑郁症
observability matrix可观测性矩阵
obstetric vacuum cup产科(抽空)吸杯
obscuration detector减光火灾探测器
obsidional infection[医] 战场感染