| 单词 | actinide |
| 释义 | actinide (extremely rare) n WORD FAMILY actinide USAGE EXAMPLESSimilar parallel formation mechanisms exist for the other actinide elements but Pu-239 is the main product of these reactions. Forbes(Sep 20, 2014) The radioactivity of the actinide elements is caused by their nuclear instability. Scientific American(Jan 27, 2012) He specializes in the development of new separation techniques to isolate actinide elements from environmental matrices such as seawater, marine sediments, and soils. Science Magazine(Apr 06, 2011) n any of a series of radioactive elements with atomic numbers 89 through 103 Syn|Hyper actinoid, actinon group, grouping any number of entities (members) considered as a unit |
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