As a means for manual intervention, at least one Emergency push button shall be provided each in the nacelle and at the control and regulating unit.
作为手动干涉的一种方式，每个机舱及控制和调节单元应至少提供一个紧急按钮。
A push unit which is provided with a long hole is positioned in the groove of the rotation unit.
一设置于转动单元凹 槽中的推动单元，该推动单元上具有一长孔；
A push unit which is provided with a long hole is positioned in the groove of the rotation unit.
一设置于转动单元凹 槽中的推动单元，该推动单元上具有一长孔；
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