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)
Observing environment探测环境
obstetrical radiology产科放射学
obsterical gas outfit产科笑气装备
obscuration awareness蒙昧意识
obstetrical analgesia产科麻醉
obstetrical operation产科外科手术
obstetric stethoscope产科听诊器
obstetric prediabetes产科的前躯糖尿病
Obstuctive azoospemia梗阻性无精子症
obsoleting indication作废的指示