A megajoule is equivalent to the energy released when a one-tonne vehicle slams into a wall at 160kmh.

一兆焦相当于一个一吨重的物体以160公里/小时的速度撞一面墙产生的能量。

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The 3 megajoule device is the first large scale module capable of storing heat at a high rate as required for DEW.

此3兆焦装置是第一个拥有存储定向能武器所需高热能力的大型模型。

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It's a complex 192-beam system that last year generated a pulse with a megajoule of energy in a few billionths of a second, making it the most powerful laser ever built.

这是一个复杂的系统，可以同时发出192束激光，去年，在十亿分之几秒的时间内，产生了能量达到100万焦耳的激光脉冲，使之成为有史以来能量最强的激光器。

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In December, the Office of Naval Research successfully conducted a world-record 33-megajoule shot of the Electromagnetic Railgun aboard Naval Surface Warfare Center Dahlgren Division.

FORBES: U.S. Navy Pioneers Next-Gen Electric Weaponry

Three years ago our sea-borne force managed an 8 megajoule blast, now its researchers have more than quadrupled that: 33 megajoules accelerating a projectile using magnets.

ENGADGET: Navy's prototype rail gun projectile hits mach 7 at 33 megajoules, our hearts skip a beat (video)