“radon”的概念、定义、翻译、参考文献-科学参考

单词	radon
释义	radon [`rā´dän] ^CHEMISTRY A chemical element, symbol Rn, atomic number 86; all isotopes are radioactive, the longest half-life being 3.82 days for mass number 222; it is the heaviest element of the noble-gas group, produced as a gaseous emanation from the radioactive decay of radium. ^{NUCLEAR PHYSICS} The conventional name for radon-222. Symbolized Rn.
随便看	DTL DTS Dualayer distillate process Dualayer solution dual-bed dehumidifier dual-channel amplifier dual completion well dual control dual coordinates dual-cycle boiling-water reactor dual-cycle reactor system dual diversity receiver dual-emitter transistor dual-flow oil burner dual-fuel engine dual-function catalyst dual graph dual-gravity valve dual group dual-gun cathode-ray tube dual in-line package duality principle duality theorem dual laser dual linear programming

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