而另一半的元凶则是飞机自身的结构问题：颠簸不平的气流穿梭过往时同起落架、翼缝和襟翼等结构相遇制造了另一半噪音。

But the frame of the aircraft itself is to blame for the other half: the bumpy air flow over the undercarriage and the slots and flaps of the wings creates the rest of the racket.

youdao

与某些报道相反，他表示737上的短翼并不妨碍安装GTF发动机，只需略微调整前起落架即可。

And contrary to some reports, he says the low-slung wings on the 737 do not prevent it being fitted with the larger GTF engines. All it requires are some minor changes to the front undercarriage.

youdao

本文基于模态分析理论和试验技术，提出了一套测定纵列式旋翼直升机在起落架上的刚体模态特性试验方法。

A test method of measuring rigid modal behavior of column rotor helicopter on landing gear is suggested in this paper.

youdao