藍火-燃燒完全（溫度高） 紅火-燃燒不完全（含有碳粒） blue flame - complete combustion red flame - incomplete combustion Tags: 0 comments 12 likes 0 shares Share this: 烘豆師筆記 Roaster's Note About author not provided 烘豆師筆記 5188 followers 4474 likes View all posts