If this is not the case, the bearing must be subjected to an additional radial load, e. G. by increasing belt tension or idling torque, or by other means.
否则必须给轴承施加径向载荷，例如，通过提高皮带张力或空转扭矩，或采用其他手段。
3
The laser surgery for vision correction that replaced radial keratotomy (e. g., lasik and other procedures) is not associated with visual disturbances at high altitudes.