The microwave oven should be covered for hot meals. ?

cover the microwave oven to heat the food, so as to lock the moisture in the food and heat it more evenly, so that it will be soft and delicious when heated, otherwise it will be very dry if too much water is lost. But don't cover the lid too tightly, and leave a breathable hole, otherwise it will not dissipate heat, which will make the pressure in the container too high and steam will push the lid up in the microwave oven. ?

Extended information:

A microwave oven is a cooking appliance that uses food to absorb microwave energy in a microwave field to heat itself. The microwave generated by the microwave generator in the microwave oven establishes a microwave electric field in the microwave oven cavity, and certain measures are taken to make this microwave electric field distributed as evenly as possible in the oven cavity. Food is put into this microwave electric field, and the cooking time and microwave electric field intensity are controlled by the control center to carry out various cooking processes.

Baidu encyclopedia: microwave oven