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Roentgen

['rʌntdʒən;'rɜːnt-;'rɒnt-;-gən] or ['rɛntjən]

解釋/意思:

(noun.) German physicist who discovered x-rays and developed roentgenography (1845-1923).

(noun.) a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air.

整理:雷蒙德--From WordNet

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