瓦斯兄弟^^ 左:純丙烷 右:丙烷+丁烷混合 參考資料:http://163.32.74.2/site/teh-car/teaching/LPG/06096-02.pdf Gas brothers~ Left:propane Right:propane+butane Tags: 2 comments 9 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