求翻译：2）调节偏心轮之偏心距：（见图3）先松开固定螺母（4）转动偏心轮（2）来改变偏心距（D）大小，可根据盘之刻度确定，其刻度值大偏心距也大，由于偏心距的改变，腭板的摆动幅度也随之改变，使推出的物料的体积也跟着改变，就能达到供量多少的需要，当调节好后将因定螺母（4）拧紧。以上两种方法都可以达到调节供料量多少，但调节的范围一定要在技术性能的规定以内，以防止过载而损坏电动机。是什么意思？

2) Regulation eccentric wheel of eccentric from: (see Figure 3) first release fixed nut (4) rotation eccentric wheel (2) to change eccentric from (d) size, may under disc of scale determines, its scale value large eccentric from also large, due to eccentric from of change, palatal plate of swing ran

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2) Regulation eccentric wheel of eccentric from: (see Figure 3) first release fixed nut (4) rotation eccentric wheel (2) to change eccentric from (d) size, may under disc of scale determines, its scale value large eccentric from also large, due to eccentric from of change, palatal plate of swing ran

2) Regulation eccentric wheel of eccentric from: (see Figure 3) first release fixed nut (4) rotation eccentric wheel (2) to change eccentric from (d) size, may under disc of scale determines, its scale value large eccentric from also large, due to eccentric from of change, palatal plate of swing ran