相比相对价值绝对价值很难确定。
It is harder to think about absolute value than relative value.
确定了镜场中第一排定日镜相对于接收塔的最佳距离。
The distance between the tower and the first row heliostats in tower SPPs is deduced.
其原理是根据眼睛的位置及大小确定嘴部的相对位置。
The principle is to locate mouth region according to eye's size and position.
通过对比，确定了酸碱沉淀法提取DCA13，并用滴定法测定DCA13的分析方法，其相对误差小于1.5％。
Titration analysis method was set up for DCA13; the error was less than 1.5%.
从实验结果看，测定值的相对标准偏差小于0 7%，相对不确定度小于0 5%。
Under experiment condition, RSD is less than 0.7%, reference uncertainty is less than 0.5%.
检查两个项目，以确定它们的相对大小；
检查两个项目，以确定它们的相对大小；
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