| 单词 | element 117 |
| 释义 | element 117UusAn artificially produced radioactive element whose most stable confirmed isotopes have mass numbers of 293 and 294, with the lighter, more stable isotope having a half-life of less than 80 milliseconds. Also called ununseptium See Periodic Table. Words nearby element 117element, element 113, element 114, element 115, element 116, element 117, element 118, elemental, elementary, elementary charge, elementary function The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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