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直升机在第二次世界大战初期就已问世。从那时起,直升机进入了边使用边发展的时期。随着科学技术的发展和作战的需要,直升机由用于空降、抢救伤员和战区供应,逐渐发展到布雷和打击各种舰只。目前,一些国家的军队已装备可以防地面火器射击,并装有各种武器直接参战的武装直升机。武装直升机诞生初期,只装有机枪和其他轻型火器。美国在越南战争中初次使用的武装直升机,由于火器系统不完备,加上越南的地形有利于开展
Helicopters came out early in World War II. Since then, the helicopter has entered a period of development with its use. With the development of science and technology and the need of combat, the helicopters have been gradually used to mine and fight various ships by supplying them for airborne rescue and casualties and theater supplies. At present, the armed forces of some countries are equipped with armed helicopters that can guns against ground fire and have various kinds of weapons directly participating in the war. Armed helicopters were born only with machine guns and other light firearms. The U.S. helicopter gunships initially used in the Vietnam War, due to the incomplete firearms system and the favorable terrain of Vietnam,