Last Updated：2025/11/19
Although krypton is a colourless, odourless noble gas present only in trace amounts in the Earth's atmosphere, its spectral lines are invaluable in certain types of high-precision lighting and lasers.
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Although krypton is a colourless, odourless noble gas present only in trace amounts in the Earth's atmosphere, its spectral lines are invaluable in certain types of high-precision lighting and lasers.
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