The orientation of the regenerated silk fiber was observed with a polarizing photomicroscope. The structure and mechanical properties of the silk fiber were characterized with a Raman spectroscope and an Instron tensile tester. 用偏光显微镜观察了丝纤维的取向,用拉曼光谱仪和Instron拉力仪表征了丝纤维的结构和力学性能。