武器,随着科学技术和生产力的发展不断创新,其威力日益增大。在冷兵器时代,关公使用的长柄大刀,据说重185斤,算是杀伤力很大的兵器。公元13世纪,在英国发明了一种长弓,每分种可发射10—12枚箭,箭长3英尺,射程可达400码,是当时颇有杀伤力的远程武器。随着火药运用于战争,以及技术和工业革命时代的到来,枪、炮、坦克、战斗飞机、战斗舰 Weapons, with constant innovation in the development of science and technology and productive forces, are becoming increasingly powerful. In the era of cold weapons, Guan Gong used a long knife, said to weigh 185 pounds, be considered a great lethal weapon. In the 13th century AD, a longbow was invented in Great Britain, capable of launching 10-12 arrows per minute, with an arrow length of 3 feet and a range of up to 400 yards. It was quite a lethal long-range weapon at that time. With the application of gunpowder to war and the arrival of the era of technology and industrial revolution, guns, artillery, tanks, combat aircraft, combat ships