shading circuit

例句：

1. 1. The shading circuit is designed to control the amount of light entering the room.
   遮光电路设计用来控制进入房间的光线量。
2. 2. The lighting circuit in the factory is responsible for providing the necessary illumination.
   工厂里的照明电路负责提供必要的照明。
3. 3. The illumination circuit is crucial for ensuring proper lighting in a darkened room.
   照明电路对于确保黑暗房间中适当的照明至关重要。