... 聚焦反射器 focusing reflector 聚焦调节器 focusing regulator 聚焦圈 focusing ring ...
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本发明通过在摇臂的旋转轴结合部设置聚焦伺服用调节器，来上下调节凝聚在光盘记录面的焦点，从而能够准确补偿光盘旋转时产生的光盘记录面的位置变化。
With the focus serve fixed on the rotating shaft to adjust the focus point up and down, it is capable of accurately making up position change of the disk recording area at rotation.
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