{"type":"rich","version":"1.0","title":"一元一次方程","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/WIi4f5vd1yMW6N8Q/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/5888b87f9bddd72316e8df10\" frameborder=\"0\" allowfullscreen></iframe>"}