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SI unit
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释义
SI unit /es ˈaɪ ˌjuːnɪt/ noun [countable] technical a standard unit of measurement in an international system used especially by scientists. SI units include the metre, kilogram, second, ampere, and Kelvin. SI单位,国际标准度量单位SI unit nounChinese
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更新时间:2026/9/5 4:07:18