Heat gets tribed trapped under the a piece of glass or plas plastic covering the top of the cooker.About sellven A box oven is a fective effective for slow cooking of large amounts of food.

• 太阳能灶是在较低的温度下经过长时间的加热来烹煮食物的，这允许人们烹煮食物的同时做其它的事情。