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bunch blasting成束导火线爆破bunched charge聚束电荷,群聚电荷bunching cavity聚束谐振腔,聚束腔,群聚谐振腔bunching theory群聚理论bunch-end rot果穗端腐病bunch stranding束绞bunch of five s手,拳头buncher voltage聚束电压bunched current聚束电流bunch of cables电缆束