短语词组短语Electron Beam Ion Trap 电子束离子阱;电子柬离子阱beam penning trap 潘宁阱Compact Electron Beam Ions Trap 紧凑型电子束离子阱single laser beam trap 激光势阱beam trap detail 电子束陷阱ar hollow beam trap 氩离子中空光束囚禁trap beam 射柱陷阱 返回 beam trap