low-background steel
短语词形变化
low-background steels
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释义与例句
n.
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1.
Steel with low inherent radiation levels, suitable for instruments and experiments highly sensitive to radiation.
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2.
Steel created before 1945, and not contaminated by radioisotopes originating from nuclear bomb tests and explosions, and other nuclear technology radioactivity releases.
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3.
Used other than figuratively or idiomatically: see low-background, steel.
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词源
Ellipsis of low background radiation steel.
来源:wiktionary