单词	beamline
释义	beamline noun beam·​line ˈbēm-ˌlīn  plural beamlines physics : a beam of particles (such as photons or electrons) emitted from a particle accelerator The synchrotron uses magnets to guide electrons around a ring that's about the size of a basketball court. Every time an electron turns a corner, so to speak, it emits a photon. The photons fly away from the ring in what are called beamlines. National Geographic, October 2001 Word History First Known Use 1971, in the meaning defined above
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