电磁炉里面是不是有铜线（如今的电磁炉有铜线的吗）

{"rich_content":{"text":"","spans":null},"video":{"vid":"v028b0680000c1ed81rhairvlsjnh5o0","duration":136.303,"width":854,"height":480,"file_size":15364359,"thumb":{"web_uri":"tos-cn-p-0000/c08ced43fea54f0c94f38d0b49e0a71b","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":136.303,"file_size":14040745,"w":854,"h":480},"normal":{"duration":136.303,"file_size":10470484,"w":640,"h":360},"ultra":{"duration":136.303,"file_size":14040390,"w":854,"h":480}},"is_encrypted":null,"sp":null,"md5":"eb38b2c8b04caef33854f310c324df66","tos_key":null,"secret_key":null,"encrypt_algorithm":null,"extra":null}},