短語詞組短語mental retardation 智力遲鈍；智能缺陷（等于mental deficiency）retardation time [高分子][物化]推遲時間;滯后時間;遲延時間;延時retardation factor 阻滯因數(shù);阻滯系數(shù);滯留因子developmental retardation 發(fā)展遲緩;發(fā)育遲緩Psychomotor retardation 精神運動性抑制;心理動作遲鈍;精神性運動發(fā)育遲緩;動遲緩evolutionary retardation 進(jìn)化阻滯;演化停滯;演化遲滯現(xiàn)象daily retardation 潮汐延時;潮遲率;潮遲retardation pressure 制動壓力retardation field 減速場growth retardation 生長遲緩；生長阻滯 返回 retardation