To introduce the design method, composition and main study content of "Aid-decision System of Heavy Machine Gun System of Approval Test".

介绍了重机枪系统定型试验辅助决策系统的设计方法、组成和主要研究内容；

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Electron beam welding machine consists of electron gun, high-voltage power, vacuum unit, vacuum welding chamber, electrical control system, fixture and working station running system and etc.

电子束焊机由电子枪、高压电源、真空机组、真空焊接室、电气控制系统、工装夹具与工作台行走系统等部分组成。

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He had rigged the .50-caliber machine gun on the turret with a propane system that generates the noise and muzzle flash of gunfire, without the bullets.

WSJ: These Vehicles Are Tons of Fun, and Good for Thwarting Road Rage