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.

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。

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The results show that : the male undergraduates′degree of social support are higher than that of females but there aren′t difference between the both and theirs are same in the model .

结果显示： 研究对象的男性比女性社会支持程度略高， 但没显著性差异；

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The air temperature of the same season in different patterns of farmland is different t, this difference is mainly caused by the cover of different vegetation.

不同退耕模式同一季节大气温度有差异，这种差异主要是植被覆盖的不同引起的。

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It was far and away more seamless than the older PowerDVD and although it was very Media Center like, it still wasn't the same -- the most obvious difference is the scrub bar, which looks nothing like the Media Center scrub bar.

ENGADGET: Video: Cyberlink's native Media Center Blu-ray player HD