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目前，对父母针对儿童期疫苗接种的知识和态度的研究，与这一问题的巨大规模和相关性来讲很不相称。
Current research into parents' knowledge and attitudes towards childhood vaccination is disproportionately low considering the enormous scale and relevance of this issue.
本文讨论了如何构建一个测试数据集，以使该数据集达到用于测试的规模，并且具有期望的值分布和列间相关性。
This article discusses how to make up a test data set so that it is large enough to be useful for testing and has the expected distribution of values and correlation between columns.
结果表明，江西省的城市化水平与城市效率的相关性总体一致，符合“城市规模效率梯度”现象。
The result indicate that urbanization level in Jiangxi is consistent with the city efficiency relevant overall, accord "the city scale efficiency gradient" phenomenon.
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