They may involve one ply or strand of staple fibers and one of filament, two strands of staple fibers, or two of filaments, or multiple combinations of these.

• 自捻纱中可以包括一根短纤纱和一根长丝纱,或两根短纤纱,或两根长丝纱,或这两种纱线的其它多种组合方式。