我们能够探测到端粒长度的差异，这是一个很简单而且快速的技术：很多样本能够同时检验，更重要的是，我们能够判断出那些是危险的端粒？
We can detect very small differences in telomere length and it is a very simple and fast technique where many samples can be analysed at the same time.
第三步，再经聚类分析将样本分群，并用方差分析检验群体之间有显著差异。
Thirdly, we grouped samples by cluster analysis, and test that there are significant differences among the groups.
效果检验：编制调查问卷，利用配对样本t检验方法检验顶岗前后班级管理能力差异。
Result test: Prepare the questionnaire, and utilize the paired sample t to test the difference of class management ability before and after in-post practice.
用成对样本t检验法比较同一无性系内两种外植体的差异用成组样本t检验法比较两组无性系间的差异。
Paired sample t test method was used to compare the difference between the two explants of the same trees. Independent sample t test method was used to determine the difference between the two groups.
再次，我们以执行旧会计准则的样本一作为参照，检验了执行新会计准则的样本二以及两个子样本在首次公丌发行前的盈余管理程度是否有差异。
Thirdly, we test whether there are differences in the degree of earnings management between Sample Two, sub-sample one, sub-sample two and Sample One.
再次，我们以执行旧会计准则的样本一作为参照，检验了执行新会计准则的样本二以及两个子样本在首次公丌发行前的盈余管理程度是否有差异。
Thirdly, we test whether there are differences in the degree of earnings management between Sample Two, sub-sample one, sub-sample two and Sample One.
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