replacement culture medium置换培养基 rheumatoid cervical myelipathy类风湿颈脊髓病 radiographic contrast medium放射照相造影剂,放射照相对比剂 reinforced clostridial medium强化的梭状芽胞杆菌培养基 red cell mass红细胞群,红细胞总量,红细胞凝团块 radiocontrast material放射对比物质 radiographic contrast media放射摄影(对比)造影剂 roux conditioned medium鲁氏条件培养基