Available ratio of soil carbon  C素有效率; 土壤碳素有效率; 碳素有效率

decreasing ratio of water content  含水率降低率

determinator of ratio of specific heat of gas  气体比热容比测定仪

Invariability of Ratio of Areas  面积比不变性

lower ratio of water andglue  低水胶比

mass ratio of water to cement  混凝土配合比

Quantity ratio of Si and Al  硅铝的量比

Ratio of water  吸水倍率

ratio of water and carbon  水碳比

Ratio of water and fertilizer  水肥比

ratio of water and plaster  水膏比

ratio of water binder  水胶比

Ratio of water content of rock fragment to fine so  碎石与细土含水量比值

Ratio of water content of rock fragment to fine soil  碎石与细土含水量比值

Ratio of water demand  需水比

ratio of water dosage  胶砂需水量比

ratio of water power utilization  水能利用提高率

ratio of water reducing  减水率

ratio of water to binder  水灰比