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基本计量单位代号*量的名称计量单位单位代号定义{长度【米111等于8。氢(s 6Kr)原子在ZPI。~sd。能级之间跃迁时辐射的光波,在真空中波长的1650763 .73倍。质量公斤(千克)kg国际铂铱合金公斤原器的质址。时问秒S规定采用历书时190。年1月。日12时算起的回归年的1/31556925.9747
The basic unit of measurement code * The name of the unit of measure Unit Code Definition {Length [m 111 is equal to 8. Hydrogen (s 6Kr) atom in ZPI. ~ sd. The level of the transition between the light waves, the wavelength of vacuum in the 1650763 .73 times. Quality kg (kg) kg International Platinum iridium kilograms of the original site. When asked S S provisions of the calendar 190. January of the year. 1 / 31556925.9747 in the year of reckoning starting at 12 o’clock