基本解釋[經(jīng)濟(jì)學(xué)]聚束加速器詞組短語短語relativistic electron bunching accelerator 相對(duì)論性電子群聚加速器;相對(duì)論性電子束bunching accelerator更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)聚束加速器