2010年8月10日，俄罗斯梁赞地区，普京头戴耳机坐在一架消防飞机的驾驶舱中。

Russia's Prime Minister Vladimir Putin, wearing headphones, sits in the cockpit of a firefighting plane in Ryazan region August 10, 2010.

youdao

整体油箱，由机翼结构件梁、肋、蒙皮组成，用来在飞机上储存燃油的金属容器。

INTEGRAL TANK, a metal container formed by the wing structure (spars, ribs, skin) for storage of fuel on the airplane.

youdao

后半部分利用近似技术对飞机机翼前梁布局优化进行了研究。

The second half of the paper presents the research of the layout optimization of aircraft wing .

youdao