六、有专用名称的国际制导出单位
人文科学

        Derived units are formed by combining base units. Velocity forexample (distance divided by time) has units of metres per second(ms-1 or m/s). Certain units have their own special names andsymbols as shown.导出单位是通过基本单位的组合而形成的。例如速度(距离除以时间)的单位......（本文共 714 字）     [阅读本文] >>