The company's femur implant is dense where stiffness and strength is required, but it also has strong lattice structures which would encourage the growth of bone onto the implant.
Theoretically speaking, the nodes number of the lattice will make an exponential increase for the growth of objects and attributes in the worst condition.
理论上说，最坏情况下概念的节点个数会以形式背景对象个数和属性个数的指数倍增长。
3
The selecting principle of crystalline growth direction was researched from crystal habit, lattice structure and crystal brittleness of sapphire crystal.