double-ply造句

• Used for twine processing of cotton , wool , polyester fiber , chemical fiber and blended yarn , processing raw material bobbins of different specifications and forms and twisting of double - ply or triple - ply yarns on parallel cylindrical bobbins
  使用于棉、涤、化纤及混纺的合股加工,把不同规格形状的原料筒子,将两股或者三股的纱线并合在倍捻机上加工的平行圆柱筒子。