例句與造句

1. In 1954, the 10th General Conference on Weights and Measures ( CGPM ) identified electric current as the fourth base quantity in the practical system of units and added two more base quantities temperature and luminous intensity making six base quantities in all.
2. In 1948, an overhaul of the metric system was set in motion which resulted in the development of the " Practical system of units " which, on its publication in 1960, was given the name " The International System of Units ".
3. In 1948, after representations by the International Union of Pure and Applied Physics ( IUPAP ) and by the French Government, the 9th General Conference on Weights and Measures ( CGPM ) asked the International Committee for Weights and Measures ( CIPM ) to conduct an international study of the measurement needs of the scientific, technical, and educational communities and " to make recommendations for a single practical system of units of measurement, suitable for adoption by all countries adhering to the Metre Convention ".
4. It's difficult to find practical system of unit in a sentence. 用practical system of unit造句挺難的