It's the second recent case in the Burr Bank area after another seagull was found with an injured wing.
这已经是博尔地区最近以来的第二件涉猎海鸥的事件,另一只海鸥被发现时它的翅膀已经受伤了。
Vibrating in the wind, the bristles create some drag. But they also reduce the wing's slipstream, an area of low-pressure turbulence that pulls back on the wing, and hence reduce drag.
风中振动时,刷毛会产生反作用力,但同时它也可以减少机翼滑流,产生一个低气压乱流,机翼上形成回力,因而减小阻力。
Then last week, other stress tests on an airframe showed that the plane needs strengthening at 18 points on either side of the fuselage just above the area where the wing attaches.
就在上周,机身结构的其他应力测试显示,就在机翼连接的面之上的机身每侧需要强化18个点。
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