throttle stem packing gland

例句：

1. 1. The throttle stem packing gland is responsible for regulating the flow of oil to the engine.
   节流阀体密封装置负责调节油流向发动机的流量。
2. 2.The throttle stem packing gland needs to be replaced regularly to ensure optimal performance.
   节流阀体密封装置需要定期更换，以保证最佳性能。
3. 3. The throttle stem packing gland is a critical component in maintaining airflow control in the engine.
   节流阀体密封装置是维护发动机气流控制的关键部件。