extracting roots

• 开方

extracting roots的用法和样例：

例句

1. There are various ways of obtaining the powers and roots of binary numbers.
   求二进制数的乘方和开方的方法有多种。
2. The roots are extracted in the root sections by method of bisection or secant.
   采用二分区间求根法或弦截求根法确定故障点。