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2)
#34,481
Common
にさんかたんそ
Meaning
    1. ①
    1. ①
      EN Carbon dioxide (chemical formula CO2) is a colorless and odorless gas vital to life on Earth.
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5)
#161,961
にさんかケイそ
Meaning
    1. ①
      chemistry
      silicon dioxide; silica
      See also: シリカ
    1. ①
      EN Silicon dioxide, also known as silica (from the Latin silex), is a chemical compound that is an oxide of silicon with the chemical formula SiO2.
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9)
#316,499
にさんかたんそさくげんもくひょう
Meaning
    1. CO2-reduction goal
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