测试了固化后的聚氨酯胶粘剂胶片的性能，讨论了分子结构对拉伸强度和伸长率的影响。
The effect of molecular structure of polyurethane on tensile strength and percentage elongation were evaluated by measuring the mechanical properties of the cured resin films.
通过试验测试发现粗纱伸长率对粗纱重量不匀率和条干c V值影响显著，强调了控制粗纱张力的重要性。
The test shows that the influence of roving elongation percentage on roving weight unevenness and evenness CV is evident, and the control of roving tension is very important.
研究聚氯乙烯/氯化聚乙烯封套材料的性能，测试封套材料的透湿率、拉伸强度和扯断伸长率。
The properties of the PVC envelop material modified by CPE was investigated, and the moisture permeability, tensile strength and elongation at break were also tested.
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