系统电源用英文怎么说呢

"系统电源" 用英文可以翻译为 "system power" 或 "power supply."

来源:

"Power supply" 这个词本身就是电源的意思，而 "system" 这个词是指整个系统，所以 "system power" 就是指整个系统的电源。

英文例句及中文翻译:

Make sure the system power is turned off before you begin working on the computer. (在你开始工作之前，确保系统电源已关闭。)
The system power indicator on the motherboard is glowing red, which means the computer is receiving power. (主板上的系统电源指示灯是红色的，这意味着电脑正在接受电源。)
The system power supply unit is not functioning properly. We need to replace it. (系统电源单元不能正常工作。我们需要替换它。)