解决问题的关键英语：The key to solving the problem.
双语例句：
1、并编写了实现图形交换的C语言程序，给出了解决问题的关键程序。
Program The key program to realise, the solution by language C is listed.
2、提出了一个新的基于Linux桌面操作系统的稳定性测试框架，探讨了测试过程中存在的一些技术难点和相应解决问题的关键技术。
The paper shows a new stability test framework based on Linux desktop operation system and focuses on some key technique difficulties and corresponding solutions.
3、用Green函数方法解决问题的关键在于求解Green函数。
Because Green function is pivotal in Green function method, several typical methods are introduced for solving Green function.
4、传统的PID参数整定方法无法实现对参数的鲁棒整定的要求，PID参数的寻优成为解决问题的关键。
The traditional methods can not fit the request of PID parameter robust tuning, so the PID parameters optimization has become the key of resolving the problem.
5、他们强调经济增长才是解决问题的关键。
Instead, they stress that the key is economic growth.