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The sharp knife edge is generally made of steel because of the hardness of the steel, which is easy to cut things The spatula for stir-frying is made of wood because of the good thermal insulation of the wood, which can isolate the heat of the spatula
Therefore, the answer is: good hardness and thermal insulation
Because wood and plastic are insulated. If it's all metal, it will transfer heat and hot your hands, otherwise you have to hold it with a cloth, and it will be difficult for you to hold it if you are not a professional chef.
Rice cooker - cooking. Induction cooker - stir-fry, stew. Microwave oven - food heating. Oven - baked food. Hood - oil smoke discharge.
When you use a pot or spatula, you are afraid of touching the iron, and you know that it will be hot, so you have to make a non-hot one for you to hold.
Most of the poor people use all solid wood furniture, and the richer ones use panel furniture, and the richer ones combine with solid wood (but mainly hardwood).
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