短语词组短語bcn -beacon- 信標BCN -business computer network 商業計算機網絡c -BCN 立方硼碳氮;立方BCNPVG -BCN 上海h -BCN 硼碳氮PEK -BCN 巴塞羅那o -BCN 類金剛石結搆HKG -BCN 香港 返回 BCN