When it is rolled clockwise by your right hand, an S-twist yarn will become tighter and a Z-twist yarn looser.
如果你用右手顺时针的旋转它，S捻的纱线会越变越紧，Z捻的纱线会越变越松。
An S-twist yarn is one in which the fibers follow a spiral pattern parallel to the center bar of the letter s.
捻的纱线中的纤维成螺旋状并与字母s中间的斜杠平行。
Through analyzing the motion and dynamics of free yarn segment (F. Y. s) in rotor spinning, the effect of both the F. Y. s's shape and the spinning parameters on twist distribution of the f.
通过对自由纱段的运动及受力分析，对自由纱段形态以及纺纱工艺参数对自由纱段捻度分布的影响进行了研究。
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