ramjet duct

例句：

1. 1. The ramjet duct is crucial for the engine's performance.
   喷气式飞机的进气道对发动机的性能至关重要。
2. 2.The engineer carefully inspected the ramjet duct to ensure its integrity.
   工程师仔细检查了喷气式飞机的进气道，以确保其完整性。
3. 3.The ramjet duct was designed to improve airflow efficiency.
   喷气式飞机的进气道被设计来提高空气流动效率。