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  1. SI-derived unit

    • n.
      Any of various units of measurement, such as the newton and tesla, that are derived from the basic units in the International System.
  2. 知識+

    • 物理章節內容翻譯英翻中P3

      ...單位許多(m), 長度(l), 和時間(t) 的因素。如果你忽略單位系統, 即, 是否它是SI 或英國, 因素然後叫維度。例如: 牛頓的第二法律F=ma 力量: kg?m/s2...