镧,钸族的稀土金属,用于制造光学玻璃: lanthanum镦头铆钉: set head rivet镧玻璃: lanthanum glass; lanthanumglass镦头紧固件: headed fastener镧对大豆种子活力的影响研究: research of influence of la on the living power of soybean seeds镦头机 压头机 封头机: headingmachine镧化物;镧族元素: lanthanide镦头机: button head machine镧化物铁氧体: lanthanide ferrite镦头: heading; u et head; upset head