柯林斯词典particle accelerator (particle accelerators) 1. N-COUNT A particle accelerator is a machine used for research in nuclear physics that can make particles smaller than atoms move very fast. 粒子加速器 返回 particle accelerator剑桥词典in physics , a machine that makes extremely small pieces of matter travel at very high speeds , so that scientists can study the way they behave 粒子加速器 返回 particle accelerator