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US4988318A Unsaturated vapor high pressure sodium lamp arc tube fabrication process 失效
不饱和蒸汽高压钠灯电弧管制造工艺

Unsaturated vapor high pressure sodium lamp arc tube fabrication process
摘要:
An arc tube fabricating process wherein an oxygen-absorbing getter is affixed to at least one of a pair of electrodes, one of the electrodes is sealed into the end of a tubular ceramic envelope, a dosage is deposited in the tubular ceramic envelope and the other one of the pair of electrodes is sealed into the other end of the tubular ceramic envelope.
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