natural numbcr

• 自然数

natural numbcr的用法和样例：

例句

1. Today we are going to classify natural numbers by seeing how many divisors they have.
   我们学习根据一个数约数的个数来对自然数进行分类。
2. In this paper a new mutation operator is proposed, which is applied into chromosomes encoded with natural numbers.And the optimal mutation rate is studied.
   针对自然数编码的遗传算法，提出了一个新的变异规则，并研究了相应的最优变异率。