1960年10月在法国巴黎召开了第十一次国际度量衡常会。在这次常会上,主要的决議是通过以长度、貭量、时間、温度、电流強度和光強为六个基本量(原以长度、貭量、时間为三个基本量),并对这六个基本量的公制单位重新作出規定,其中有的采用了新的定义,尤以米和秒的新定义最值得我們注意。現将这六个基本量的单位的新定义介紹如下,以供参考。 October 1960 held in Paris, France Eleventh International Metrology and Convention. At this regular session, the main resolution is based on six basic quantities (length, weight, time, three basic quantities) in terms of length, weight, time, temperature, current intensity and light intensity and The rest of the six basic metric units have been restated, some of which have adopted new definitions, especially the new definition of meters and seconds that deserves our attention. The new definitions of these six basic quantities are presented below for reference.