束流，汉语词语，拼音shù liú，意思为狭窄的水流。
经过一年多的修整后，质子束流又开始在世界最大的粒子对撞机快速前进了。
Proton beams are zipping around the world's largest particle collider after more than a year of repairs.
日内瓦时间刚过下午1点，对撞机的操作人员操纵着由数十亿个粒子组成的质子束流，以接近光速的速度实现了首次对撞。
Collider operators steered the proton beams, comprising billions of particles accelerated almost to the speed of light, into their first collision just after 1 p.m. Geneva time.
“还没有成为一个对撞机”，Gillies补充说，第一批碰撞至少还得等十天，物理学家和工程师将利用这段时间控制束流。
Nor is it a collider - Gillies says that the first collisions will not come for at least ten days, giving physicists and engineers time to practise controlling the beams.
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