求高手帮忙翻译机械英语（不要在线翻译那种不通顺的）

Three, four contact ball bearing in wind generators, small and medium-sized crane and excavator is widely used. Along with the development of industry, machinery for three and four contact bearings put forward higher request. Channel is bearing load of work surface, so the channel design and machining is particularly important.
Article 3 the contents are involved, the four contact ball bearing channel model design and build, channel processing, wheel and working principle of channel machining errors. Established in three, four mathematical model is the contact channel according to the geometrical model based on the curvature radius, and contact Angle is used to determine the relationship between bearing stress deformation, In the process of writing in gully bearing the image of peach and coarse grinding and fine grinding and processing method and circular ellipse, the method of dressing grinding wheel from shaping the design that channel machining method, Through the wheel grinding work principle, structure and introduces the principle of the wheel, Machining errors are factors in the process of grinding process system precision, craft system dynamic characteristics of the system, the process of elastic deformation caused by the original error. Complex workpiece, The right channel mathematical model and the precision grinding method is based on the channel, and channel machining precision grinding and determines the quality of bearing factory, so good control of the wheel and the process parameters is very important