商城购物APP开发 原生系统搭建

Gunpowder is one of the four great inventions in China. Under the action of appropriate external energy, it can carry out rapid and regular combustion and produce a large number of high-temperature gas substances at the same time. 

商城购物APP开发   原生系统搭建开发

It is an important part of ammunition, which is mainly used as the energy source of gun, projectile, rocket, missile propellant and other driving devices in military.

From practical experience or deliberate experiments, alchemists know that mixing proper amount of sulphur with nitrite and charcoal will ignite or even explode. Ge Hong, a famous Taoist scholar in the Jin Dynasty, used realgar, nitrite, lard colon oil and pine resin in his book Baopuzi Xianyao Paper.