结合蠕变试验结果，研究和分析了三种测定蠕变塑性伸长率的方法。
Combine with the creep experimental results, the three methods for measure plastic percentage elongation of creep are studied and analysed.
用于测定氨纶丝断裂强度、断裂伸长率、定伸长负荷、应力松弛，塑性变形等性能指标。
Used for testing indexes of polyurethane monofilament, such as breaking tenacity, elongation at break, load at specified elongation, relaxation of stress, plastic deformation, etc.
试样在超塑性变形时产生的伸长率与晶界宽度有密切联系。
Elongation of the sample during superplastic deformation has a close relation with grain boundary width.
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