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现在,家里常常用微波炉加热食物,方便又快捷。可是,微波炉里并没有炉火,为什么也可以加热食物呢?A:微波炉的顶部有一种特殊的装置,它在微波炉工作时会发出波长为0.001～1米的微波。虽然人的
Now, the family often uses microwave ovens to heat food quickly and easily. However, there is no fire in the microwave and why can the food be heated? A: There is a special device on the top of the microwave which emits microwaves with a wavelength of 0.001 to 1 meter when working in a microwave oven. Although human