gigaannum

名词 n.

英文释义

名词 n.
  1. Alternative spelling of giga-annum (“gigayear, a billion years”). alt-of,alternative
    — Studies of the Earth’s processes, phenomena, and origins are unique in the physical sciences for their need to observe and measure past events over spatial and temporal scales that range from the micron and second to the astronomical unit and gigaannum.

词形变化

gigaannums plural
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