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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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    English Translation of “ES” | The official Collins Spanish-English Dictionary online Over 100,000 English translations of Spanish words and phrases
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    es is the reinforced (reforçada) form of the pronoun It is used before verbs beginning with a consonant
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    Premium skateboard shoes since 1995 Iconic models like Accel Creager Designed by skaters, for skateboarding
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    Units of measure Exasecond (Es), an SI unit of time (greater than all elapsed time) Exasiemens (ES), an SI unit of electric conductance
  • What does ES mean? - Definitions. net
    Es: In Spanish, "es" is the third person singular form of the verb "ser," which means "to be " It is used to indicate a permanent state or characteristic of a subject





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