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近年来,随着科学技术的发展,利用电热元件低温(发热体表面温度≤80℃,热射线波长>7微米)辐射采暖,目前已在世界各国
In recent years, with the development of science and technology, the use of electric heating elements at low temperature (heating surface temperature ≤ 80 °C, heat ray wavelength> 7 microns) radiant heating, currently in various countries in the world