常見(jiàn)例句雙語(yǔ)例句A open cell polyurethane rigid foam for vacuum panel core material was prepared. The open cell percent of the core material is about 95%.制備了用于聚氨酯真空隔熱板的開(kāi)孔硬泡芯材，該泡沫芯材的開(kāi)孔率達(dá)95%。It is used to produce the model airplane without causing the tail to bend upwards. The difficulty for the stereotype of the rigid foam plastic wing with dome upper surface is solved.它 的目的用它制作航模，能克服制作尾部上翹，上表面略穹的硬質(zhì)泡沫塑料機(jī)翼 難以定型的困難。ip.comA polyurethane(PU)rigid foam was prepared, using PAPI and the polyether polyols deried from starch ethylene glycol glycoside(EGG)as the main materials, and the foaming processing was studied.以淀粉乙二醇糖甙聚醚、多苯基多次甲基多異氰酸酯（PAPI）為主要原料，對(duì)聚氨酯硬質(zhì)泡沫塑料的發(fā)泡工藝進(jìn)行了研究。 返回 rigid foam