emergency rotary converter

例句：

1. 1. The emergency rotary converter was used to switch the power grid during a power outage.
   在停电期间，紧急旋转变压器被用来切换电网。
2. 2. The emergency rotary converter was designed to quickly respond to power failures and restore power to critical areas.
   紧急旋转变压器被设计成能迅速响应电力故障并恢复对关键区域的供电。
3. 3. The emergency rotary converter is an essential tool for maintaining power supply continuity during emergencies.
   紧急旋转变压器是维持电力供应连续性的必备工具，在紧急情况下至关重要。