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Principle: Traditional tobacco is smoked by ignition. The temperature of tobacco when burning reaches 800 degrees. Nicotine, carbon monoxide, tar, etc. will be produced in the process of tobacco burning. At the same time, tobacco itself also has fragrance released. Smokers are mainly satisfied by smoking nicotine and tobacco fragrance. There are more than 2,000 kinds of harmful ingredients produced by smoking, The main components that cause harm to human health come from tar produced in the combustion process, However, the working temperature of the heating non-burning electronic cigarette is about 300. Not more than 300 degrees, Tar is mainly produced at over 400 degrees, In other words, Heating does not burn electronic cigarettes. Due to the relationship between temperature, A small amount of tar is produced, which can be ignored. Moreover, the temperature at which heating does not burn is only about 300 degrees, so there is no combustion, no open flame and no soot. However, the aroma and smell of tobacco are still released, and smokers can also obtain nicotine, so that smokers can also obtain the feeling of smoking real cigarettes.NBC宣布一口气续订《#芝加哥烈焰# Chicago Fire》三季。不幸的是在高速公路上遭遇车祸，汽车坠下百米山崖。Article 10 The secondary qualification of a fire safety assessment institution shall meet the following conditions:Achievements cannot be made alone.Docker is an open source application container engine, which allows developers to package their applications and dependency packages into a portable container and then publish them to any popular Linux machine. Virtualization can also be realized. Containers use sandbox mechanism completely and there will be no interface between them.