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.
介绍了一种低功率圆柱形阳极层离子源的工作特性和束流分布特性。
A low power cylindrical anode layer ion source and its working characteristic, and the beam distribution are introduced.
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.
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