为了提高其准确度和重复性，该装置被附带一个外部的反侧隙聚甲醛(聚合物)小齿轮，该齿轮可优化风力涡轮机的大偏航从动齿轮。

For increased accuracy and repeatability, the unit can be supplied with an external anti-backlash POM (polymer) pinion gear which optimizes coupling to the wind turbine's large yaw bull gear.

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所述方法具体适用于大型风力涡轮机的空心齿轮。

The method is particularly suitable for hollow wheel gears for large wind turbines.

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