弹性带买家 Elastic strap; 购弹性带; [V165914] 乌克兰求购弹力织物，弹性带，复合泡沫(Elastic Fabrics, El..) (4-22) [V147127] 美国求购弹性带(Flex Belt) (11-13)
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微球复合泡沫材料是一种新型的结构泡沫材料。
The syntactic foam is a new kind of structural foam which has lots of excellent properties such as light weight, high strength and so on.
空心玻璃微球是制备复合泡沫材料的关键原料，对其进行表面改性有利于改善复合材料的性能。
Hollow glass microspheres are used as a key material to produce syntactic foams. Surface modification of the microspheres is very important for improving properties of the foams.
采用二次发泡工艺制备出一种声学性能优良的聚氨酯多层复合泡沫吸声材料，并对其吸声性能进行了研究分析。
This research provided a new technique that two procedure foaming technique to produce composite Polyurethane foam, and made a research on its sound absorption property.
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