嘴唇紧而平，不松散。
剪口特性：套管截面用剪刀剪断后。剪口平整、不松散。
Cutting feature: when the sleeving crosscut the cross end without loose and remain smooth.
这样可保证省道终端不松散。加固缝也可用来缉缝省道总端。
This secures the end of the dart. Backtracking can also be used to secure the end of the dart.
毛毡用天然羊毛不采用经纬交织而利用羊毛的缩绒性毡合而成，它富有弹性，不松散，保温隔热，组织紧密，耐磨性好。
Felt for natural wool does not use interweave and the use of wool felting felted together, it is elastic, not loose, insulation, compact structure, good wear resistance.
毛毡用天然羊毛不采用经纬交织而利用羊毛的缩绒性毡合而成，它富有弹性，不松散，保温隔热，组织紧密，耐磨性好。
Do not use natural wool felt with the use of warp weft woven wool felting fulling made it flexible, not loose, insulation, well organized, good wear resistance.
毛毡用天然羊毛不采用经纬交织而利用羊毛的缩绒性毡合而成，它富有弹性，不松散，保温隔热，组织紧密，耐磨性好。
Do not use natural wool felt with the use of warp and weft woven wool felting fulling made it flexible, not loose, insulation, well organized, good wear resistance.
毛毡用天然羊毛不采用经纬交织而利用羊毛的缩绒性毡合而成，它富有弹性，不松散，保温隔热，组织紧密，耐磨性好。
Do not use natural wool felt with the use of warp and weft woven wool felting fulling made it flexible, not loose, insulation, well organized, good wear resistance.
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