single-core oil-filled cable

例句：

1. 1.This cable is designed for use in high-voltage electrical systems.
   这种电缆设计用于高压电气系统中。
2. 2. The single-core cable was installed to improve the reliability of the power supply.
   安装这种单芯电缆是为了提高电力供应的可靠性。
3. 3. The engineers carefully inspected the single-core oil-filled cable before installation.
   工程师在安装前仔细检查了单芯油填充电缆。