Different twisting systems are described and modern twisting machines presented.
2
注：特种机型改造，捻线机加捻改造，价格另议。
Note: price of reformation for special machine and twisting frame shall be further discussed.
3
本文介绍了利用粗纱机纺制股线的工艺过程及粗纱机牵伸、加捻和卷绕机构的改造方法。
This article deals with foe process of spinning plied yarn by roving frame, the remaking of drafting assembly, and the twisting and winding mechanism by roving frame.
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