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美国研制出一种多用途电扇。它克服了电扇用途单一、在许多地区使用季节短的缺点,使用电扇能够一机多用。这种电扇上装有功率为500W 的加热装置,因此,它既可在夏日送出
The United States has developed a multipurpose fan. It overcomes the shortcomings of single fan use and short seasons in many areas. The use of electric fans can be used in one machine. This fan is equipped with a heating device with a power of 500W, so it can be sent out in summer.