单词	atomic mass
释义	atomic mass noun : the mass of an atom usually expressed in atomic mass units also : atomic weight Example Sentences Recent Examples on the Web How changes in atomic mass leave clues to our climatological past. Dan Zak, Washington Post, 15 July 2019 Not only should the chemistry of the two isotopes be the same, the slight difference in atomic mass largely washes out in the watery environment of the body. Jennifer Ouellette, Quanta Magazine, 2 Nov. 2016 How changes in atomic mass leave clues to our climatological past. Dan Zak, Washington Post, 15 July 2019 Not only should the chemistry of the two isotopes be the same, the slight difference in atomic mass largely washes out in the watery environment of the body. Jennifer Ouellette, Quanta Magazine, 2 Nov. 2016 Say, for example, that all of the gases and particles collected indicate the fission products are 6.2 percent atoms with an atomic mass of 137, 6.1 percent with 99, and so on. Andrew Karam, Popular Mechanics, 7 Jan. 2016 Some have theorized that the soda got its name from the atomic mass of lithium, which is roughly seven. Beth Mole, Ars Technica, 22 Sep. 2017 See More Word History First Known Use 1874, in the meaning defined above Medical Definition atomic mass noun : the mass of an atom usually expressed in atomic mass units also : atomic weight compare mass number
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