It is suggested that the specific speed would be replaced by diametric ratio, and the new nameplate would be used.
建议比转速应为直径比所取代，并启用水斗式水轮机新铭牌。
2
Distribution rule of the arbor in different diametric class was investigated by sampling survey and statistical analysis, then expanded to the whole area in Beijing.
Observing vascular morphological and diametric changes of low leg on 30 cases with nodular vasculitis using Duples and Colour Dopplar Ulrtasound, 20 normal people as controls.