二、各部分的名称
图2-1（Figure 2-1）
压脚护罩：Presser foot guard，挑线防护罩：thread take-up guard，玻璃
护罩：glass guard，压脚调节螺杆:Foot adjusting screw，针杆护罩：Pin guard，
油窗：oil window，加油窗口：Refueling window， 操作面板：operation panel，
过线：line cross，夹线器：yarn trapper
W4机器电控与机械一体，可以在机器上调节电控相关参数，实现了人性化的
人机交换模式，操作便利！（ W4 machine electric control and mechanical
integration, can adjust the electric control related parameters on the
machine, realized humanized man-machine exchange mode, the operation
is convenient!）
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