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排氡通风
释义
排氡通风
Encyclopedia
工学
放射性矿床开采
释
ventilation for radon discharge
排氡通风
在铀矿开采中,向井下供给新鲜风流,稀释、抑制和排出氡和氡子体等污染物的矿山通风方法。目的是保障铀矿井下工作人员的安全和健康,对个人受到的放射性照射加以控制,确保井下工作人员接受的年平均有效剂量不超过规定的限值。
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Memorials Submitted to the Throne in the Song Dynasty
Memorials to the Throne during the Tiancong Era of Qing
memorials to the throne of Lu Zhi
Memorials to the Throne Written by Government Officials of the Ming Dynasty
Memorials to the Throne Written by Government Officials of the Song Dynasty
Memorials to the Throne Written by Lu Zhi
Memorials to the Throne Written by Renowned Government Officials through History
memorial submitted to a superior
Memorial Submitted to Prince Jianping
memorials with no cover
Memorial Table of Emperor of Qinghe Prefecture in the Tang Dynasty
memorial tablet
Memorial Temple to Cang Jie
memorial to emperor
Memorial Tomb and Temple of Sima Qian
memorial to the emperor for congratulations
Memorial to the Murdered Jews of Europe
memorial to the throne
memorial to the throne(accordion form)
Memorial to the Throne Concerning Archives Rearrangement
memorial to the throne for discussing state affairs
Memorial Tower of Sino-Soviet Friendship
Memorial University of Newfoundland
memorial with the emperor's commens written in cinnabar ink
Memories and Archives
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更新时间:2026/6/29 7:26:48