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1.壓力棒彈性上銷 . p& [- X! s0 A2 U U% X: Z壓力棒彈性上銷是在原細紗上銷的基礎上,后區附加一根(V形牽伸中)或兩根(直線牽伸中)控制輥(又稱壓力棒),在后區形成壓力棒曲線牽伸,如圖(a)所示 ...
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