percentage recovery

Factor analysis-UV Spectrophotometry was used simultaneously to determine the contents of a three-component system consisting of pyrocatechol, resorcinol and hydrochinone. The method was simple and fast, with a recovery of 93. 52~ 107. 20% and an average percentage error of 2.17%.

本文运用因子分析-紫外分光光度法同时测定邻苯二酚、问苯二酚和对苯二酚三组份含量，方法简单快速，回收率93.52～107.20%，平均百分误差2.17%。

The recovery percentage was no more than 60% as the processes of trinal evaporation and vacuum distillation were applied to caprolactam reclamation from extract water in caprolactam polymerization plant.

己内酰胺聚合装置回收萃取水中的己内酰胺采用三效蒸发、真空蒸馏的方法，回收率只有60%。

The standard deviation is 0.9 μ gCu(ⅱ)/ 50ml, the coefficient of variation is 1.6% and percentage recovery is in the range 92-110%.

该方法的标准偏差、变动系数和回收率分别为0.9μgCu（Ⅱ）/50ml，1.6%和92～110%。

Recovery performance of W-shape matallic flexible graphite spiral wound gasket exceeds over ten percentage on nation standard and reaches international advanced level.

W形金属柔性石墨缠绕垫片的回弹性高出国标十几个百分点，达到了国际先进水平。

After improving the process, the ore dressing recovery percentage is improved notables, and yielded notable results.

生产实践表明, 改造后的工艺流程技术可行,选别指标大幅度提高, 经济效益显著.