1, roast duck cake can be heated in microwave oven. In daily life, microwave oven is often used to heat food, because it can heat the inside of food at the same time, so that the whole object is heated evenly and the heating speed is fast. Therefore, it is essential to heat food in a microwave oven, which is both fast and convenient.

Microwave oven, as its name implies, is a modern cooking stove that uses microwave to heat food. Microwave is an electromagnetic wave. The microwave oven consists of power supply, magnetron, control circuit and cooking cavity. The power supply provides a high voltage of about 4000 volts to the magnetron. Under the excitation of the power supply, the magnetron continuously generates microwaves, which are coupled into the cooking cavity through the waveguide system. There is a rotatable agitator near the entrance of the cooking cavity. Because the agitator is a fan-shaped metal, it can reflect microwaves in all directions after rotation, so it can evenly distribute microwave energy in the cooking cavity, thus heating food. The power range of microwave oven is generally 500~ 1000 watt.

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