control rod pair

例句：

1. 1.The nuclear power plant uses a pair of control rods to regulate the flow of radioactive material.
   核电站使用一对控制棒来调节放射性物质的流动。
2. 2. During the testing, the scientists used a pair of control rods to monitor the radiation levels.
   在测试期间，科学家们使用一对控制棒来监测辐射水平。
3. 3. The engineers had to replace the damaged control rod pair before they could restart the reactor.
   工程师们不得不更换损坏的控制棒对，才能重新启动反应堆。