Reducing the tension upon the fiber under high temperature to provide enough movement space for polyester segments, which is beneficial to the relaxation of high elastic strain.
适当地降低高温下纤维的张力，为高分子链段的运动提供了活动空间，有利于高弹形变的松弛。
Fiber endoscopy and lower tension duodenography may bring a high diagnostic rate of duodenal tumor.
纤维内镜检查和十二指肠低张造影对十二指肠肿瘤诊出率高；
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