采用夹头分离速率控制方式对有屈服现象和无屈服现象的试样进行拉伸试验，探讨了试验过程中试样应变速率和应力速率的变化情况。
The change of strain rate and stress rate of samples with and without yielding phenomenon was studied during the tensile test under the control of grip separate rate.
对熔融纺丝-冷却拉伸与热致相分离两种制备微孔聚丙烯中空纤维膜的意义、原理、过程、影响因素等进行了评述。
Microporous polypropylene hollow fibrous membranes may be prepared by the melt spinning and cold stretching (MSCS) or thermally induced phase separation (TIPS) method.
模拟结果表明，相分离图案很大程度依赖于有限预拉伸的强度和各相的相对百分比。
Our results indicate that the phase separation patterns depend strongly on both the amount of the uniform stretch and the relative percentages of the phases.
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