"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.
Наука и техника
。旺商聊官方下载对此有专业解读
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插上耳机之后还可以使用调频广播应用正常收听FM。