退化 become vestigial; degenerate; deteriorate; retrograde; devolution; retrogradation; retrogression; retroversion; regression; involution; degeneration; degenerescence; degeneracy; cataplasia; catagenesis; atresia 鸡的翅膀逐渐退化, 不会在空中飞行了。 the wings of the chicken have become vestigial; it can no longer fly. 土豆种了几年之后就会退化。 after a few years' planting, the quality of the potato crop deteriorates
In order to solve the premature problem in strength optimization design of laminate , to combine the part - degenerate operator and adaptive operator is a good idea . poisson ' s ratio is a parameter which measures the volume - changed of objects 同时针对强度优化的具体问题构造合适的适应度函数,并且通过采用“局部退化算子”和“自适应算子”相结合的方法较好地解决了基本遗传算法中常见的早熟性收敛问题。