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铀矿山的主要辐射危害因素是放射性粉尘、氡气及其子体。
The main factors of radiation hazards in uranium mines are radioactive dust, radon and its daughters.
youdao
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铀矿山的主要辐射危害因素是放射性粉尘、氡气及其子体。
The main factors of radiation hazards in uranium mines are radioactive dust, radon and its daughters.
youdao