extensional set
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美
【计】外延集合
双语例句
- That is because it is easier to establish a pure shear flow than pure extensional flow, which is hardly to set up as the polymer material itself has a yield of strain and extensional flow is always accompanied by shear flow.
然而，由于聚合物材料本身具有应变屈服性，要建立一个纯拉伸流场几乎是不可能的。所以实际聚合物材料流动很少发生完全的纯拉伸变形，其变形流动过程必然伴随剪切变形。