阶段检测 meaning in Chinese

phase detection，pd

Although these studies were run independently , they all reached roughly the same conclusion : if a unit cost of one is assigned to the effort required to detect and repair an error during the coding stage , then the cost to detect and repair an error during the requirements stage is between
尽管这些研究都是独立进行的，他们都得出了基本相同的结论：如果在代码阶段检测和修复一个错误的费用为1个单位，那么在需求阶段发现和修正一个错误的费用只有1 / 5到1 / 10 。