mine electric power supply

例句：

1. 1.The mine's electric power supply iscritical for the operation of the mining machinery.
   矿用的电力供应对采矿机械的运行至关重要。
2. 2. The mine's power supplyis being upgraded to meet new safetystandards.
   矿用的电力供应正在升级，以符合新的安全标准。
3. 3. Themine's electric powersupply has been restored after apower outage.
   矿用的电力供应在一次停电后已经恢复。