特殊用法borderline mental retardation1.【心理】临界智力落后chemical retardation1.化学阻滞cultural-familial mental retardation1.【心理】文化家族型智力落后developmental retardation1.发育迟缓growth retardation1.生长阻滞[停滞]ion retardation1.离子减速, 离子阻滞light-wave retardation1.光波延时(作用)magnetic retardation1.磁滞mental retardation1.智力落后[迟钝]mild mental retardation1.【心理】轻度智力落后phase retardation1.相位推延polymerization retardation1.聚合抑制steric retardation1.位滞(现象)strain retardation1.应变推迟thermal retardation1.保温time retardation1.时间推迟