生产粗梳毛纱的细纱机种类很多，例如走锭纺纱机、环锭纺纱机等。
Several types of spinning systems have been used in making woolen yarns, for example mule spinning, ring - frame spinning, etc.
生产粗梳毛纱的细纱机种类很多，例如走锭纺纱机、环锭纺纱机等。
Self- twist spinning produces yarns more cheaply than ring spinning and considerably faster with less labor.
文章指出，走锭细纱机牵伸应尽量采用混合牵伸方法，根据原料变化相应调整牵伸分配。
It pointed out that the drafting of mule should better use combination drafting and select right proportion of different drafting with different material.
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