The wear resistance metal back with the solid lubricants can continuously provide lubricating source during the bearing operation to achieve the setf-lubricating feature. With the combination of heavy load and impact resistance of the metal and low friction factor of the non-metal, this material is good for the various working conditions.
To use the word "Dung" (Impartiality) to raise the Name is to shine the light on truth, to use the word "Luan" (Interpretation) to call the Name, is to understand the words. If the truth is not Named, it cannot enlighten, and so it is bound to "Dung" in order to be portrayed. Words, when unexplained, cannot be understood, so we must utilize "Luan" in order to to illustrate. When the truth has been portrayed, the words has been illustrated, then the practice and introspection can be left hanging. That is clear.
