The ratio of solvent to reactant to be hydrogenated was critical.
氢化苯甲酸甲酯和乙酯时，被氢化物与溶剂之比率很重要的。
The precision ratio of solvent was confirmed, and feasible spread solvent was selected.
确定了溶剂的精确配比，选择了适宜的展开剂。
The effect of extracting temperature and ratio of solvent to oil on both quality and yield of product was investigated.
主要考察了抽提温度和剂油比对橡胶填充油的质量和收率的影响。
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