guide vane cover

例句：

1. 1. The engineer installed a new guide vane cover to improve the efficiency of the turbine.
   工程师安装了一个新的导叶罩，以提高涡轮机的效率。
2. 2.The guide vane cover is crucial for maintaining the stability of the aircraft during takeoff and landing.
   导叶罩对于飞机起飞和降落时的稳定性至关重要。
3. 3.The manufacturer replaced the old guide vane cover with a more durable material to ensure long-term performance.
   制造商用更耐用的材料替换了旧的导叶罩，以确保长期性能。