短語詞組短語beam extraction efficiency 束流引出效率beam transport efficiency 傳輸效率ion beam generation efficiency 離子束產(chǎn)生效率beam combination efficiency 組束效率beam transmission efficiency 束流傳輸效率electron beam efficiency 電子束效率beam wave interaction efficiency 束波作用效率solid -beam efficiency 波束效率electro -beam efficiency 電子束效應(yīng) 返回 beam efficiency