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自从人们开始互相射击以来,大部分子弹是脱靶的或是无效的。然而,在过去的几年中,一些新的武器和武器系统已经研制出来了。它们能够更有效地命中目标,而且经常首发命中。尽管这些系统的大部分理论不是新的,但真正变成既经济又作战方便的武器还只是从在越南使用激光制导的炸弹开始的,但是这些系统存在很多局限性。今天的电光装置（EO）的技术状态不具备全天候能力,然而要求一年365天,一天24小时保持攻击能力这一点是武装部队必需具备的全天候作战的能力。
Most bullets have been off-target or ineffective since people began firing at each other. However, in the past few years a number of new weapons and weapon systems have been developed. They hit the target more efficiently and often hit the ground. Although much of the theory of these systems is not new, what truly became both an economical and a war-easy weapon has only started with the use of laser-guided bombs in Vietnam, but these systems have many limitations. The state of the art of electro-optical devices (EO) today is not capable of availability around the clock, but requiring 365 days a year, 24 hours a day, to maintain the ability to attack is the all-weather capability that the Armed Forces needs.