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单词 atomic mass unit
释义
atomic mass unit

Physics
  • A unit of mass used to express relative atomic masses. It is 1/12 of the mass of an atom of the isotope carbon–12 and is equal to 1.660 33 × 10−27 kg. This unit superseded both the physical and chemical mass units based on oxygen–16 and is sometimes called the unified mass unit or the dalton.


Chemistry
  • A unit of mass used to express relative atomic masses. It is equal to 1/12 of the mass of an atom of the isotope carbon–12 and is equal to 1.660 33 × 10−27 kg. This unit superseded both the physical and chemical mass units based on oxygen–16 and is sometimes called the unified mass unit or the dalton.


Chemical Engineering
  • A unit of mass used to express atomic and molecular weights. It is equal to one twelfth of the mass of an atom of carbon-12 and is equivalent to 1.66 × 10–27 kg.


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