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請(qǐng)問(wèn)這種雙對(duì)絞線要怎樣,做護(hù)套時(shí)才沒(méi)有絞紋?樣品絞得好圓整
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兩對(duì)線平行拖包,用單絞機(jī)對(duì)絞,節(jié)距約12倍左右,護(hù)套擠壓式外護(hù)