一種利用螺旋氣流生產光潔紗的紡紗裝置專利背景發明內容專利目的技術方案改善 中文百�全書 Template




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tomski一種利用螺旋氣流生產光潔紗的紡紗裝置專利背景發明內容專利目的技術方案改善 中文百�全書 coloring