首页 / 官方藏书 / The Childrens' Story of the War, Volume 2 (of 10) / From the Battle of Mons to the Fall of Antwerp. / Drawn by Ernest Prater from a rough sketch by Lance-Corporal Jarvis. Engineers destroy a bridge such as the above by fixing one or more slabs of gun-cotton in close contact with it. Wires are attached to the gun-cotton, and by means of electricity the charge is fired. The engineers must calculate the amount of gun-cotton required, and choose the most suitable position for fixing the charge, so that the explosion may have the desired effect.

Drawn by Ernest Prater from a rough sketch by Lance-Corporal Jarvis. Engineers destroy a bridge such as the above by fixing one or more slabs of gun-cotton in close contact with it. Wires are attached to the gun-cotton, and by means of electricity the charge is fired. The engineers must calculate the amount of gun-cotton required, and choose the most suitable position for fixing the charge, so that the explosion may have the desired effect.

The Childrens' Story of the War, Volume 2 (of 10) / From the Battle of Mons to the Fall of Antwerp. · Edward Parrott · 第 2 / 15 章