Bunchen.本奇bunchn.串；束；一群；捆n.突出物；凸起vt.使成一束(或一群等)vi.隆起；成束成群bunching mechanism聚束机理bunching attachment割草机的集堆附加装置bunching admittance聚束导纳bunches of radishes成捆的萝卜.bunching coefficient群聚系数buncher of particles粒子聚束器bunching accelerator聚束加速器bunch-map analysis聚束图分析Bunch length monitor束团长度监测器bunch widening effect束段放宽效应