Prison guards could soon stop fights with a harmless tool that shoots a laser-like beam, video game-style, down into a room where trouble is brewing.
狱卒们很快将能够使用一种无伤害的工具，对着酝酿着麻烦的房间发射一道像电子游戏中那样的镭射般的光束，来停止斗殴。
A 'Star Wars' style plasma beam which can stop fruit going mouldy has been created by scientists.
科学家已经研究到一种“星球大战”式的等离子束能够阻止水果发霉腐烂。
To study the structure of telecentric beam path for zoom lens system, the axial displacement equation for the stop was deduced, which keep the system telecentric in all zoom position.
进一步研究变焦距系统远心光路的结构特征，得出了使系统在整个变焦过程中都处于远心位置的光阑轴向位移方程。
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