The identification models of leading products, potential products and product webs are constructed by using statistics theory, and then applied to choosing products in practice.

运用统计理论建立了企业主导产品、先导产品及产品链群的认定模型，并成功地将这一模型应用于宜昌市机床集团的产品选择。

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The current statistics of gold minerals is confined to the calculation of percent of grains, which is a mistake in theory and practice.

当前的金矿物统计工作大多局限于颗粒数百分比计算，而且常常把粒数比简单地等同于重量比，这在理论上和实践上均是错误的。

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Through the methods of thacking down supervisor, analysis of theory and statistics, it detects the technique principle of Flop High-Jump that was applied to directing the practice of coaching.

采用追踪监测、理论分析、数理统计等研究方法，探讨背越式跳高技术原理并运用于指导训练实践。

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