At first, wheel set drop experiments were carried out.

首先进行了轮对落放试验。

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Set how much to scroll when the mouse wheel is rotated one notch.

设定当滑鼠滚轮旋转一格时要卷动的行数。

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Set how much to scroll when the mouse wheel is rotated one notch.

设定当滑鼠滚轮旋转一格时要卷动的行数。

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