the ratio valve of air to fuel  空、燃比例阀

the ratio of fuel to water  燃水比

optimizing ratio of air to fuel  空燃比寻优

The air of the workplace  工作场所空气

the ratio of air and wastewater  气水比

the ratio of air quantity and water volume  风量与水量比值

the ratio of the circumference of the diameter  圆周率

the ratio of the densities of the misfit dislocati  上下界面失配位错的比

the ratio of the intermediate principal stress  中主应力比

the ratio of the organs to body  脏体比值

the ratio of the price and the quality  性价比

the ratio of the rate coefficient  速率系数比值

the ratio of the triple-harmonic in first-harmonic  泄漏电流3次谐波占基波比例

fuel-to-air ratio  燃料与空气比

Ratio of air to coal  风煤比

ratio of air to coal amount  风煤比

ratio of air to gas  空燃比

ratio of air to oil  风油比

ratio of air to water  气水比