现提出应用经验系数0.95来修正蒸馏过程带来的损失，结果令人满意。
A satisfactory result can be got by using the experienced coefficient 0.95 to correct the distillation loss.
回收率实验表明，苯酚经预蒸馏后平均回收率在95%左右，损失率达5%。
The experiment of recovery fraction shows that after distillation the recovery fraction of phenolic acid is about 95% and the loss efficiency is about 5%.
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