raobn.无线电气象探测(无线电探空观测)Raabbr.[化]元素镭（radium）的符号raige of vision视力范围Rallinafasciatan.红腿斑秧鸡rachitic rosary佝偻病性串珠,串珠状肋骨,胸串珠racurrence rate复发率Ravius' processrachis internode穗轴节间ralax the bowels缓下rachitis uterina[医] 胎性佝偻病raking mechanism耙动机构racheal stenosis气道狭窄