Ostap奥斯塔普OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)osteochondrodysplasia骨软骨发育不良,骨软骨发育异常ostium uteri interunm子宫内口Ostwald's colourmeterOsteotomy of mandible下颌切骨术Ostracod fossil zones介形类化石带osteolytic metastases溶骨性转移Osteoarficular damage骨密度osteoporotic syndrome肌质疏松综合征ostium valvae ilealis回肠瓣开口osteoma of chest wall胸壁骨瘤