【#人类碳足迹# ：无桨叶的风力发电涡轮机】你见过无桨叶的#风力发电# 吗？在西班牙马德里，人们尝试利用新技术，更高效地获取风的能量并将其转化为电力。@杨钊YangZhaoTIO #CGTN#纪录片# Have you ever seen wind power without blades? In Madrid, people are trying to use new technology to capture wind energy and convert it into electricity more efficiently. Find out more in brand new "Tech It Out" documentary "Human Carbon Footprint". http://t.cn/A6KSMdiN