"Birds can actually morph their wings," says Upmanyu. "They have perfected this highly efficient way to fly." Aircraft and wind turbines might one day do something similar. Upmanyu suggests that the wing could automatically and dynamically respond to air pressure, using a valve-based system to adjust its shape.
Вашингтон Кэпиталз
。关于这个话题，heLLoword翻译官方下载提供了深入分析
Мужчина пролетел полмира и был шокирован признанием своей девушки02:30
Now you can make an informed decision
Code dump for 2.16