In the last few years,the tripodal ligands bearing nitrogen atoms have drown much attention because of their polydentate,flexility and ease to synthesize.
The cutters used in high speed machining(HSM) have poor rigidity, therefore the method fits to HSM of die cavity due to the unfluctuating cutting force characteristic.
The soft-stiff rings of the experimental box are used to ensure axial softness and radial stiffness; the veridical experiments simulate better the one-dimensional plane strain motion.
In this paper , a rigidity theorem of hypersurface in real space form will begiven.In addition, we obtain rigidity theorems of submanifold in sphere which improvethe result of Hou and Xu.