duct design

例句：

1. 1. The engineer designed the newduct system to improve efficiency.
   工程师设计了新的管道系统以提高效率。
2. 2. Theduct design is crucialfor maintaining proper airflow inthe room.
   管道设计对于保持房间内空气流通至关重要。
3. 3. The duct designwas carefully crafted to minimize noise and maximizecomfort.
   管道设计被精心制作，以最小化噪音并最大化舒适性。