Lastly, create winglets by folding down the top quarter-inch of the wingtips.

最后，通过折叠翅顶端的四分之一英寸来创建小翼。

The air flowing over a bird's wings curls upwards behind the wingtips, a phenomenon known as upwash.

鸟翼上方的气流在翼尖后方向上盘旋，这种现象被称作气流上洗。

It is also wider with raked wingtips while retaining its basic structure and sweep.

它的翼尖也采用了后掠设计，从而使机翼变得更宽，同时保留了基本结构和后掠角度。

The reason for the 777X's folding wingtips  is that they're a space-saving measure.

777X 折叠翼尖的原因是它们是一种节省空间的措施。

And then supposedly from watching buzzards and how their wingtips moved while they were in flight.

然后据说通过观察秃鹰以及它们飞行时翼尖的运动。

Seeing a feathered wingtip loosen and fall away, he realised the wax was softening in the heat.

看到羽毛翅的一端松动并脱落，他意识到蜡在高温下正在软化。

Their wingtips are black, and their under parts  are a whitish or tan colour with dark bands.

它们的翼尖是黑的，下部呈或棕褐，带有深条纹。

His wingtip shoes crunch on gravel.

他的翼尖鞋在砾石上嘎吱作响。

Two Argentine Skyhawk fighter jets slice through the South Atlantic sky, trails of white vapor tumbling from their wingtips.

两架阿根廷天空鹰战斗机划过南大西洋的天空，翼尖拖的尾迹。

Because of big angle during landing, it may cause the wingtips or engines to hit the ground.

由于陆时角度大， 可能会导致翼尖或发动机撞击地面。

The plane won't automatically extend  the wingtips before take-off, though, with the task falling to the pilots.

不过，飞机不会在起飞前自动展开翼尖，任务落在了飞行员身上。

If the wingtips didn't fold, the jet would  have a wingspan equivalent to the Boeing 747 and the Airbus A380.

如果翼尖不折叠，喷气式飞机的翼展将相当于波音 747 和空客 A380。

What do you make of the Boeing 777X's folding wingtips?

您如何看待波音 777X 的折叠翼尖？

Typically, when you see these taxiway incursions, airplanes are taxing right next to each other and it's wingtip to wingtip damage.

通常情况下， 当你看到这些跑道入侵事件时，飞机正紧挨滑行， 翼尖对翼尖， 极易发生碰撞。

Simple Flying was able to get up close and personal with the 777X at the  2021 Dubai Airshow, including the new wingtips.

Simple Flying 能够在 2021 年迪拜航展上近距离接触 777X，包括新翼尖。

Tracking its movement in minute detail, researchers found that the snail's wingtips trace out a figure of eight to generate lift, just like of those of an insect.

研究者仔细追踪这种海螺的运动，发现它的翅末端能伸出数字8那样的形状来产生支撑力，就像其他昆虫那样。

The wingtip of the American Airlines Flight 5490 struck American Airlines Flight 4522 on a taxway at Ronald Reagan Washington National Airport around 1245 local time.

美国航空公司5490航班的翼尖在当地时间约12时45分撞上了罗纳德·里根华盛顿国家机场滑行道上的美国航空公司4522航班。

One of the unique features of the jet compared to other widebody commercial aircraft  is its folding wingtips.

与其他宽体商用飞机相比，这款喷气式飞机的独特之处之一是它的折叠翼尖。

So they parked all the planes like wingtip to wingtip, which just makes it easier to guard, but makes them easy to shoot up from the air too.

于是他们将所有飞机像机翼尖对机翼尖一样排列停放，这样虽然便于看守，但也使得它们在空中更容易被击中。

Their quiet dignity reminded me of my great-uncle Terry, who'd lived downstairs when I was growing up on Euclid Avenue, mowing our lawn dressed in wingtips and suspenders.

他们安静的尊严让我想起了我的叔叔特里，当我在欧几里得大道长大时，他就住在楼下，穿翼尖和吊带修剪我们的草坪。