微波炉的出现极大地便利了人们的日常生活。将生的、冷的食物放入微波炉中,关闭炉门,打开开关,让食物转上一会儿,就烧热煮熟了。不过微波炉中并没有火,它是怎么烧熟食物的呢?这都是微波的功劳。微波就是高频电磁波,频率在300兆赫到30万兆赫之间。微波炉其实就是一台微波发生器,它产生的微波频率是2450兆赫。这种微波很有趣,遇到肉类、禽蛋、蔬菜这些富含水分的食物时, The advent of microwave ovens has greatly facilitated people’s daily lives. Place raw, cold food in the microwave oven, close the oven door and open the switch to allow the food to be cooked for a while before being cooked. However, there is no fire in the microwave, how is it cooked food? This is the credit of the microwave. Microwaves are high-frequency electromagnetic waves that range in frequency from 300 MHz to 300,000 MHz. The microwave oven is actually a microwave generator, which produces a microwave frequency of 2450 MHz. This microwave is very interesting, met meat, eggs, vegetables, these water-rich foods,