three-element control

例句：

1. 1. The three-element control system is widely used in industrial automation.
   三元素控制系统在工业自动化中被广泛应用。
2. 2.The three-element control system has been proven to be highly efficient in reducing energy consumption.
   三元素控制系统已被证明在降低能源消耗方面非常高效。
3. 3. The three-element control system can effectively prevent the occurrence of equipment failures and maintenance issues.
   三元素控制系统能有效预防设备故障和维修问题的发生。