Osten.奥斯特河(在德国)OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)Ostwald ripening奥斯特瓦尔德成熟Osteoporotegerin护骨素ostium pyloricum幽门口osteoarthropathy骨关节病Ostomy appliance造口术装置ostium excurrens出水小孔osteonephropathy骨肾病osteoma of skull颅骨骨瘤osteoma eburneum密质骨瘤osteoma palatina腭骨瘤