ejection case mechanism

例句：

1. 1. The ejection case mechanism is responsible for discharging the waste gas from the engine.
   喷射器机制负责将废气从发动机中排出。
2. 2.The ejection case mechanism is crucial for maintaining the cleanliness of the exhaust system.
   喷射器机制对于保持排气系统清洁至关重要。
3. 3.The ejection case mechanism is designed to prevent backflow during operation.
   喷射器机制设计用于在操作过程中防止回流。