1·The performance of foam ceramics was improved by surface treatment of the flexible urethane cellular plastic.
本研究通过对软质聚氨酯泡沫塑料的表面进行处理，改善了泡沫陶瓷的性能。
2·Structural type, design and calculation method of cellular voided flat slab with plastic boxes embedded in a underground garage were presented, calculating method of the deflection was proposed.
结合已建成的工程实例介绍了使用薄壁塑料盒作为填充体的蜂窝式空心无梁楼盖的结构型式及其设计计算方法，并提出了该类空心无梁楼盖板的挠度计算方法。