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Helicopters - and why they're important

Helicopters - and why they're important

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Army Tech

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飞行

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Despite often being expensive, high maintenance and tricky to operate, armed forces know they need helicopters. Whether it's getting troops in, or the wounded out, helicopters are often the 'go to' choice. NATO Review looks at nations' ongoing need for helicopters -- and what they're doing to make it easier to use them together.

分类： 热门免费线上视频标签技术类
插件 19 Feb 2016
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