短语词组短語live beam pass 開口梁形軋槽dead -beam pass 閉口梁形軋槽straight beam pass 梁形直孔型diagonal -beam pass 斜置梁形孔型h -beam pass design H型鋼孔型設計Single -pass THz Beam Splitter 單級光束分光鏡 返回 beam pass