operatingwind tunnel

例句：

1. 1. The operating wind tunnel is used to test the performance of new aircraft engines.
   操作风洞用于测试新型飞机发动机的性能。
2. 2.The engineers used the operating wind tunnel to simulate the flight conditions for testing the new aircraft model.
   工程师们使用操作风洞来模拟飞行条件，以测试新飞机模型。
3. 3. The operating wind tunnel is a crucial component in the development of modern aircraft technology.
   操作风洞是现代航空技术发展的关键组成部分。