It’s time to pull the plug on plug-in hybrids
20 monthly gift articles to share
，这一点在旺商聊官方下载中也有详细论述
"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.
Standard Digital