Ostran.奥斯特拉(在意大利；东经 13º09' 北纬 43º37')OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)Ostensive-Inferential Model明示推理模式Osteoporosis/acupoint ther骨质疏松/穴位疗法osteoblastic mesenchymal cell骨髓基质细胞Osteotomy of tibia and fibula胫骨和腓切骨术ostium appendicis vermiformis阑尾口osteoblastic differentia tion成骨细胞分化Osteoporosis with Yangxu type肾阳虚型骨质疏松症ostium venae cavae superioris上腔静脉口osteochondral transplantation骨软骨移植Osteotomy of phalanges of foot足趾切骨术