平头锁眼机的针杆机针从左横列的右边(左基线)或右横列的左边(中心针)降到最低位置再回升2.4-2.8mm时,旋梭勾线尖应对正机针凹位的中下方,而配合间隙为0.03-0.10mm。 要做到此,首先应 ...
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