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ES    音标拼音: ['ɛs]
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Es
n 1: a radioactive transuranic element produced by bombarding
plutonium with neutrons [synonym: {einsteinium}, {Es}, {E},
{atomic number 99}]

Es \Es\ n.
the chemical symbol for {einsteinium}, a transuranic element
with atomic number 99. The atomic weight of the longest-lived
isotope, with a half-life of 276 days, is 254. The first
isotope discovered, having atomic weight 253 and a half-life
of 20 days, was recognized in 1952 in the debris from a
hydrogen bomb test. As much as 3 micrograms of einsteinium
were produced by a complex process involving long irradiation
of plutonium isotopes in nuclear reactors. Its chemical
properties are those of a trivalent actinide element. --HCP61

Syn: einsteinium, atomic number 99.
[WordNet 1.5 PJC]



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  • Es | Spanish to English Translation - SpanishDictionary. com
    Translate Es See 12 authoritative translations of Es in English with example sentences, conjugations and audio pronunciations
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  • es - Wiktionary, the free dictionary
    The most common is es or a syllabic s, although there is some evidence which also supports, as names for the letter, sē, sss, əs, sə, and even (in the fourth- or fifth-century first Antinoë papyrus, which gives Greek transliterations of the Latin names of the Roman alphabet’s letters) ισσε (isse)
  • Google Translate
    Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages
  • What Does Es Mean In Spanish? Exploring Its Meaning, Uses . . .
    The word “es” is the third person singular form of the verb “ser,” which means “to be” in English It is an essential verb in Spanish and is used to express existence, identity, characteristics, and more Understanding its usage and conjugation is crucial for mastering the Spanish language





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