简要注释：

【英文片名】National Geographic - Megastructures:Machine Guns
【中文片名】国家地理 - 战争机器：机枪
【国　　家】美国
【类　　别】军事 / 纪录
【画面尺寸】1024 X 576【画面比例】16 / 9
【语　　言】英语
【字　　幕】中文字幕
【时 长】45mn 38s
【文件大小】1.09 GB
【压 制】飞鸟娱乐
【剧情简介】
Initially designed to save lives, the modern machine gun can destroy the enemy from more than a mile away and can fire 1,200 rounds in just 17 seconds. How did the machine gun become one of the most powerful Machines of War? NGC explores its 150-year history and evolution from the 19th-century machine gun that can chop down a single tree, to the first gangster "hit" with a Tommy Gun, to one of the deadliest weapons in the world.
它以雷霆万钧之姿改变了战争样貌，它能消灭远达两公里外或近至两公尺内的敌人。这种武器称霸现代战场，但它已演进了150年，战斗中凶悍的表现，这是机关枪的故事……