functional proof cycle

例句：

1. 1.The functional proof cycle of the new software is crucial for its success.
   新软件的功能验证周期对其成功至关重要。
2. 2. The company's functional proof cycle was completed in just a few weeks.
   该公司的功能验证周期在短短几周内就完成了。
3. 3. The functional proof cycle is an essential step in the development process.
   功能验证周期是开发过程中的一个关键环节。