纤维薄层被拉细，加捻，形成的细纱被卷绕到筒管上。
The thin layer is attenuated, twist is inserted, and the resulting yarn is wound onto bobbins.
通过直接检测前罗拉输出速度，并由软件实现筒管卷绕速度和龙筋升降速度的改变；
By detecting the speed of front roller directly, the software changes the speed of tuber and lifter.
送入成卷机的棉条被拉伸成薄层并卷绕在筒管上。
Slivers are fed through the lapper that smooths them to a thin layer of fibers which is wound onto a roll.
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