Traditionally the sealed hat of niobium alloy using in the high pressure natrium lamp adopt the tube of niobium-zirconium alloy to process.
传统的高压钠灯用铌合金封帽采用铌锆合金管加工而成。
Traditionally the sealed hat of niobium alloy using in the high pressure natrium lamp adopt the tube of niobium-zirconium alloy to process.
传统的高压钠灯用铌合金封帽采用铌锆合金管加工而成。
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