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单词
radon-220
释义
radon-220
radon-220
[
′rā‚dän ‚tü′twen·tē
]
(nuclear physics)
The isotope of radon having mass number 220, symbol
220
Rn, which is a radioactive member of the thorium series with a half-life of 56 seconds.
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adumbratively
a dum dum
a dum-dum
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a dummy run
a dumpster fire
adun
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a dunce cap
aduncity
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adunis
a dupe
adur
adure
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adu-s
adus
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adusd
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更新时间:2026/6/9 15:34:31