捻度较大的纱强力好，低捻纱柔软有光泽，高捻产生皱纱。
More twist produces stronger yarn; low twist produces softer, shinier yarn.
倍捻加捻时能实现纱线加捻四个捻度，纱线张力小，生产效率高，能提高成纱的产量质量；
Doubles twists twisting when can realize yarn twisting four number of twists, yarn tensity small, the production efficiency is high, can enhance Cheng Sha the output quality;
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