C2 noun #62,302 よく出る

an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons

boron chamber 30秒で

  • (noun) an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons

Meanings

  1. 1
    noun an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons
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