{"type":"rich","version":"1.0","title":"线性代数","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/WpdKY02iN1-kn3RO/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/5a974a634da2375fa49f744e\" frameborder=\"0\" allowfullscreen></iframe>"}