自制风力发电机制作方法(学生自制简易风力发电机)

{"rich_content":{"text":"教","spans":null},"video":{"vid":"v028b0360000c0knqs96aob67ti8r930","duration":385.498,"width":1024,"height":576,"file_size":29486600,"thumb":{"web_uri":"tos-cn-p-0000/a0acb081d04e4d06a9a2e203904c8166","width":640,"height":360,"image_type":null,"mimetype":null,"encrypt_web_uri":null,"secret_key":null,"encrypt_algorithm":null,"extra":null},"video_size":{"high":{"duration":385.498,"file_size":30637646,"w":854,"h":480},"normal":{"duration":385.498,"file_size":22471873,"w":640,"h":360},"ultra":{"duration":385.498,"file_size":35363004,"w":1024,"h":576}},"is_encrypted":null,"sp":null,"md5":"e09bdc04c563270dd046fb7cf49bc3ae","tos_key":null,"secret_key":null,"encrypt_algorithm":null,"extra":null}}