Due to the concealment and mobility of targets, anti-submarine warfare is listed as the top of three difficulties faced by world navies.

由于目标的隐蔽性和机动性，反潜作战被列为世界海军三大难题之首。

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At last, the paper also presents three different applications of the sorting processor to electronic warfare: detection of threating signal, filtering of useless signal and PRF selection filtering.

最后介绍了分选预处理器在电子战中的三种应用：威胁信号检测、无用信号滤波和脉冲重复频率选择滤波。

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All three compounds are naturally produced by some bacteria for use in a kind of chemical warfare against other bacteria.

所有这三种化合物都是细菌在自然状态下生产出来用于在某种化学战中针对其它细菌使用的。

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The show has Afghans all over the world, via satellite television, riveted every Thursday and Friday night, reconnecting them to the country's long history of poetic and musical artistry after three decades of warfare.

CNN: 'Afghan Star' seeks talent, bridges gaps

Notably, the three groups that reported receiving funding from the US are all in the business of waging political warfare campaigns directed at the Israeli public.

CENTERFORSECURITYPOLICY: drapeaux-israel-ame?rique

The three admired a level in Activision's 2007 first-person shooter Call of Duty 4: Modern Warfare, which involved shooting bad guys from a very heavily armed AC-130.

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