ratioless无比率
ration.比率;比例
ratio of sample rotation样本轮换率
ratio of gold and silver金银比价
ratio of wheel unloading轮重减载率
ratio of input to output投入产出比
Ratio of solid to liquid固液比
ratio of of depreciation[经] 折旧率
ratio of adherent to ash胶灰比
ratio of bitmninous coal烟煤比例
Ratio of measuring range量程比
ratio-recording method记录比例法