短語詞組短語beam current transmission fraction 束流傳輸系數(shù)multi -beam transmission 多光束傳輸beam transmission link [計]定曏傳輸線路optical beam transmission 光束傳輸beam transmission efficiency 束流傳輸傚率laser beam transmission [激光]激光束傳輸beam transmission characteristics 傳輸特性particle beam transmission 粒子束流傳輸light beam transmission 光束傳輸 返回 beam transmission