gam·ma /ˈgæmə/
  伽馬
  gam·ma /ˈgæmə/ 名詞
  γ(希臘字母),丙種,微克,(膠片的)反差係數,伽瑪(地磁場強度單位),γ(伽馬),希臘語第三個字母
  gamma
  伽馬
  gam·ma n. The third letter (Γ, γ = Eng. G) of the Greek alphabet.
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  gamma
       n 1: the 3rd letter of the Greek alphabet
       2: a unit of magnetic field strength equal to
          one-hundred-thousandth of an oersted
       3: Portuguese navigator who led an expedition around the Cape
          of Good Hope in 1497; he sighted and named Natal on
          Christmas Day before crossing the Indian Ocean (1469-1524)
          [syn: da Gamma, Vasco da Gamma]