四si輥gun卷juan板ban機ji適shi用yong於yu金jin屬shu板ban材cai的de彎wan曲qu成cheng形xing作zuo業ye,可ke卷juan製zhi圓yuan形xing,弧hu形xing和he必bi定ding範fan圍wei內nei的de錐zhui形xing工gong件jian,並bing有you板ban材cai端duan部bu預yu彎wan功gong能neng,剩sheng餘yu直zhi邊bian小xiao,作zuo業ye效xiao率lv高gao,並bing可ke在zai該gai機ji上shang對dui金jin屬shu板ban材cai進jin行xing大da略lve校xiao平ping。
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