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kilogram
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kilogram
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工学
〔SI基本单位〕
释
kilogram
千克
国际单位制(SI)中的质量单位。符号kg。当普朗克常数h以单位J·s即kg·m2·s-1表示时,将其固定数值取为6.62607015×10-34来定义千克,其中米和秒用c和ΔνCs来定义。
Physics
kilogram
千克
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