Aviation machine GunAviation machine gun is a kind of automatic weapon and the caliber is less than 20 millimeter.
航空机关枪简称航枪，是口径小于20毫米的航空自动武器。
A guard with an automatic weapon waits in the car with photographer Pascal Maitre during a currency exchange in downtown Mogadishu.
在摩加迪沙市区一次货币交换期间，一个握着自动武器的警卫和摄影师帕斯卡·梅伊特拉在小车里等候。
Taking structure weight as objective function, the optimization model of overweight breech of a type of automatic weapon was established, and its structure topological optimization was performed.
以结构质量为目标函数，建立了某自动武器超重部件枪尾的优化模型，进行了结构拓扑优化。
The US Army uses two distinct families of weapons in 5.56 x 45 mm calibre: the M16 rifle and the derivative M4 carbine form one group, the M249 Squad Automatic Weapon the other.
美国陆军使用两种截然不同的5.56毫米口径木仓族：一种是M16步木仓以及其派生出来的M4卡宾木仓，另一种是M249班用机木仓。
The US Army uses two distinct families of weapons in 5.56 x 45 mm calibre: the M16 rifle and the derivative M4 carbine form one group, the M249 Squad Automatic Weapon the other.
美国陆军使用两种截然不同的5.56毫米口径木仓族：一种是M16步木仓以及其派生出来的M4卡宾木仓，另一种是M249班用机木仓。
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