鸟翼

This study is concentrated on the analysis of bird-strike resistance for a wing slat, through a numerical simulation by using commercial nonlinear finite element code PAM-CRASH.

本文以机翼前缘缝翼结构为研究对象，通过大型非线性有限元分析软件PAM-CRASH，开展了飞机结构的抗鸟撞仿真设计研究。

Short-legged flightless birds of cold southern esp.

寒冷的南部特别是南极地区的短腿并不能飞翔的鸟，蹼足、鳍状翼。

Induced drag occurs when the air flow separates from the surface of a wing, while friction drag is due to the friction between the air and bird moving through the air.

诱导拖动发生时，气流分离，从表面的一翼，而摩擦拖曳是由于摩擦之间的空气和鸟移动通过空气。

Adults have black crowns, reddish-brown faces and necks, dark reddish-brown underparts with fine streaks, and black wings.

成鸟有黑冠、面孔和脖子为红棕色，背部为黑暗的红棕色，腹部有细条纹，翼黑。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。