The hydrometric pendulum is sometimes used to determine flow velocities in open channels.测流速的摆锤有时用于确定明渠中的流速....

adj.液体比重计的，液体比重测定的...

hydrometric的音标：hydrometric的英式发音音标为：[haɪdrəʊ'metrɪk]hydrometric的美式发音音标为：[haɪdroʊ'metrɪk]...