ratio cam速比凸轮
ration.比率;比例
Ratio of earnings to price利润价格比
ratio percentage restraint比率制动特性
ratio of supply and demand供需比
ratio of pigment to binder颜基比
Ratio of fertilizer mixing肥料配比
ratio of the circumference圆周率
ratio of males and females男女比率
ratio of loans to deposits[经] 存放款比率
ratio of silica to alumina硅铝比
ratio of length and radius长径比