prov:value
| - The filler material to be enclosed in the luminous unit 61 is mainly made of luminous materials,such as metal, halogen compound, sulphur, and selenium, inert gases, such as argon gas and krypton gas, for forming plasma in the luminous unit 61, and discharge solvent materials, such as mercury, for making lighting easier by assisting an initialdischarge or controlling the spectrum of generated light
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