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放射性标准
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放射性标准
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radioactive standard
放射性标准
经过精确测定、比对、公认的,可作为放射性活度计量标准的放射性物质或制品。放射性标准以单位时间内发生的核衰变数来计量,单位为贝可(Bq)。
Chemistry
>放射化学与辐射化学>基础放射化学>释义
radioactive standard
放射性标准
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foreign agent
foreign ancient building technology
foreign arbitral award
foreign atom
foreign banks in modern China
foreign bibliography science
foreign bodies in external acoustic meatus
foreign bodies in larynx,trachea and bronchi
foreign bodies in the esophagus
foreign bodies of larynx
foreign body embolism
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foreign body in nasal cavity and sinus
foreign body in trachea and bronchia
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Foreign Diaspora
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Foreign Environmental Cooperation Center, Ministry of Ecology and Environment of the People's Republic of China
foreigners' neighborhood
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