Kimball 六硼化鑭單晶陰極 Lanthanum Hexaboride Single Crystal Cathodes Kimball 六硼化鑭單晶陰極 Lanthanum Hexaboride Single Crystal Cathodes
Lanthanum Hexaboride Large Diameter Cathode 六硼化鑭大直徑陰極 Lanthanum Hexaboride Large Diameter Cathode 六硼化鑭大直徑陰極