This is a multi-barrel heavy machine gun on an anti-aircraft mount.

图中为设置在高射机枪架的多管重机枪。

youdao

Aim To research the use of floating technique on the heavy machine gun and design the parameters of the floating machine.

目的对浮动技术在大口径高射机枪上的应用进行研究，并对浮动机参数进行设计。

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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；

youdao

Sounds of heavy and light machine gun fire rattled Maiduguri as Nigeria's army pounded suspected hideouts of the Islamic rebels in a bid to flush out remnants of the militant Boko Haram sect.

VOA: standard.2009.07.30

In the back of our truck, Bulmaro Vasconcelos, a machine-gunner from Hemet, California, fired into the orchard with a heavy machine gun.

NEWYORKER: The Taliban��s Opium War

The Iraqis have fired some mortars in the direction of Chamchamal and some heavy machine-gun fire.

CNN: Kevin Sites: Kurds see bombing on northern Iraqi positions

Later, US and Afghan forces said they had come under sporadic rocket and heavy machine-gun fire from insurgents dug into defensive positions in the area.

BBC: Afghanistan: Nato launches major anti-Taliban offensive