1, space. Generally, the space of single-layer oven is small, and the scope of use is limited by space. Double-layer oven has more space and more selectivity.
2. temperature. The temperature of single-layer oven is generally lower than that of double-layer oven because of its small space and rapid heating. On the contrary, the space of double-layer oven is relatively large, so the maximum temperature limit is higher than that of single-layer oven.
3. power. Double-layer oven has higher temperature and power than single-layer oven because it radiates double-layer baking tray.
4. effect. Because of the large space, double-layer oven is heated more evenly than single-layer oven, so the baking effect of double-layer oven is better than single-layer oven.