{"type":"rich","version":1.0,"provider_name":"Speaker Deck","provider_url":"https://speakerdeck.com/","title":"ロケットの燃焼試験とは──ホットファイアと爆発の価値","author_name":"Atsushi Ishii","author_url":"https://speakerdeck.com/atsushi_ishii","html":"\u003ciframe id=\"talk_frame_1561591\" class=\"speakerdeck-iframe\" src=\"https://speakerdeck.com/player/efee67def2374279b510af2cd0918adb\" width=\"710\" height=\"399\" style=\"aspect-ratio:710/399; border:0; padding:0; margin:0; background:transparent;\" frameborder=\"0\" allowtransparency=\"true\" allowfullscreen=\"allowfullscreen\"\u003e\u003c/iframe\u003e\n","width":710,"height":399,"ratio":1.7777777777777777}