Asbestos reinforcement confers excellent flame retardation properties on a composite . 石棉增强材料使复合材料具有优异的防火性能。
The theory confirms the increase in the retardation effect with decrease in particle size . 理论证实，随着颗粒尺寸的减小，这一减速效应将增大。
Deficiencies in certain organic chemicals can cause mental retardation in babies, rickets, beriberi, blindness, scurvy and many other diseases . 缺乏某些有机化合物，能引起婴儿智力迟钝、佝偻病、脚气病、失明、坏血病和其它许多疾病。
Adaptive behavior assessment of mental retardation review 智力残疾的适应性行为评估
Diagnosis of 77 cases of intrauterine growth retardation 77例胎儿宫内发育迟缓的诊断
Rehabilitation training of children with mental retardation 精神发育迟滞儿童康复训练体会
The criminological characteristics of mental retardation 精神发育迟滞患者的犯罪学特征分析
Design of optical fiber phase retardation device 光纤相位延迟器的设计
Other or unspecified mental retardation 其他或待分类的精神发育迟滞
On the standard of material retardation in antidumping law 论反倾销立法中的实质性阻碍损害标准
