近几年人们发现,在广播、电视、报纸以及电话热线中出现了“指数”这个新鲜事物,而且指数的种类越来越多,与人们工作和生活的关系越来越密切。中暑指数医疗气象指出,人与环境之间的热交换,一是通过与周围空气及环境表面之间辐射交换和对流传导方式进行;;二是体热通过汗水和肺部呼出的水分蒸发而散失。当气温较低时,人体的放热量主要通过辐射和传导;;而在气温较高时,则以蒸发散热为主。当气温和湿度高达某一界限时,人体的热量散发不出去,超过人体的忍受极限,就会发生中 In recent years, people have found that the emergence of the “Index ” in the radio, television, newspapers and telephone hotlines is more and more exponential and has a closer relationship with people’s work and life. Heat stroke index Medical meteorology points out that the heat exchange between people and the environment is conducted by radiation exchange and convection conduction with the surrounding air and the environment surface. Second, the body heat is dissipated through sweat and moisture exhaled from the lungs . When the temperature is low, the body’s heat release mainly through radiation and conduction ;; while the temperature is high, the main evaporation and heat. When the temperature and humidity up to a certain limit, the body’s heat does not send out, more than the body’s endurance limit, it will happen