自由呼吸：设计炉灶的艺术
Hints:
Aprovecho
Cottage Grove
Oregon
Lorena
Dean Still
deforestation
Every year Aprovecho holds a "stove camp" at its testing station in Cottage Grove, Oregon. Engineers, inventors, students and others come together to design and test different methods and materials for improving stoves. Over the years, the group has made stoves using mud, bricks, sheet metal, clay, …
每年，阿布罗威奇(研究中心)在俄勒冈果园村的试验站举行“炉灶训练营”。工程师，发明家，学生和其他人都会集在一起设计并测试改善炉灶效率的不同方法和材料。 多年来，该组织已经制造出了使用泥，砖，金属片，粘土，陶器和劣化油桶的炉灶。大部分炉子看上去都像很大很深的烹饪罐。炉子的底部有一个开口，供火来燃烧，顶部的…