According to the variation questions of spinning property of sureface treatment apron, sureface non treatment apron is researched and developed.
针对胶圈表面处理造成纺纱性能发生变化的问题，研制开发了表面不处理胶圈。
According to the variation questions of spinning property of sureface treatment apron, sureface non treatment apron is researched and developed.
针对胶圈表面处理造成纺纱性能发生变化的问题，研制开发了表面不处理胶圈。
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