zero-lift chord

例句：

1. 1.The zero-lift chord is a crucial component in the design of aircraft wings.
   零升弦是飞机机翼设计中的关键部件。
2. 2. The engineer used the zero-lift chord to calculate the lift coefficient of the airfoil.
   工程师使用零升弦来计算翼型的空气升力系数。
3. 3. In the study, the researchers found that the zero-lift chord had a significant impact on the performance of the aircraft.
   在研究中，研究人员发现零升弦对飞机的性能有显著影响。