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US5258687A Mercury vapor discharge device 失效
汞蒸气放电装置

Mercury vapor discharge device
摘要:
In a mercury vapor arc discharge tube having a pair of electrodes, an emissive material disposed on the electrodes consists essentially of a single phase compound of Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4 where x is from about 0.25 to about 0.95.
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