本文对教练员在指挥中面临的各种问题进行了多方面的分析研究，以提高教练员的指挥能力。
This article make a analytic research on the various problems confronting coaches so as to improve their commanding ability.
在综合研究了贺兰山北段晚石炭世晚期和早二叠世早期植物群的特征和性质的基础上，对此植物群进行了古生态学方面的分析研究。
On the basis of the study on the flora characteristic of the late late Carboniferous and early early Permian in the Helan Mountains, the palaeoecology study on this flora has been analyzed.
在本文中，笔者从四个方面对职务犯罪预防的理论和实践进行分析研究。
In this article, the author analyses the theory and practice of the duty crime prevention from the four aspects.
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