Results The result between pre-and post-soaks was compared with matched pair t test. There was significant difference between groups 1 and 2(P<0.01), but not between group 3 and control group(P>0.05).

结果实验前后各组均数间进行配对检验，结果1、2组间在处理前后差异有显著性（P<0.01），实验3组与对照组间在处理前后差异无显著性（P>0.05）；

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