even odd是什么意思

用法例句

On the basis of the definition of the parity of three circular functions,the author produced a simple method to get tertiary integral value by using the parity of three circular functions and region symmetry.

在三元函数的奇偶性定义的基础上,给出了利用三元函数的奇偶性与区域的对称性求三重积分值的简便方法。