目前纺纱用钢丝圈开口拉伸变形率的测量采用人工方法，精度低，操作困难。
The conventional method of testing the shed drawing deformation of travellers is of poor precision and difficult operation.
本文论证了开口薄壁杆件在斜弯曲情况下，不仅产生两向弯曲变形，而且伴随着扭转变形的发生。
An open thin-walled membed subjected to skew-bending not only produces the bending deformations in two principle directions, but causes torsion as well.
通过对开口时经纱变形伸长特性和开口形式的分析，指出了多臂机不能充分发挥效能的问题所在，并给出了解决办法。
Based on the analysis of distortion and protraction of warp and form of shedding, the problem that dobby can not fully develop its capacity is located.
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