It is virtually impossible for the manufacturer to produce ideal bearing surfaces by machining procedures alone 生产厂家仅通过加工工艺形成理想的承载面在实际上是不可能的。
2.
All loading pads shall be capable of pivoting in relation to the direction of the applied force and the pivot point shall be as close as practically possible to the load surface 所有的坐垫要能够做到相对于用力方向的绕轴旋转以及该旋转点要和承载面尽可能地靠拢。