ratioless无比率
ration.比率;比例
ratio of signal to noise信噪比
ratio of liquid to powder液粉比
ratio of whipping overrun搅打起泡率
ratio of finished product成材率
ratio of benefit and cost效益成本比
ratio to the primary unit对立单位之比
ratio of nondelay service立接制百分率
ratio of gypsum and water水膏比
Ratio of zinc replacement置锌率
ratio-trend forecasting比例趋势预测