sonic modulus的意思|示意

The orientation and crystallinity of the PET fibers were measured by sonic and X-ray diffraction. The feature of modulus-strain curves were discussed from the fiber structure and applications.

通过声速法和X射线衍射实验测试纤维的取向和结晶，结合纤维结构及纤维应用讨论了两种PET纤维的模量-应变曲线特点。

The structure and properties of flat section and circular polyester filament were studied through measuring birefringence, sonic modulus and work coefficient ect.

对扁平形聚酯纤维和圆形聚酯纤维的结构和性能进行了研究。