By using observation data over 50 years, the paper systematically analyzed the relations of different stand density with diameter, height, crown of trees and so on.
利用近50年的系统定位观测资料，分析红松果材兼用林不同林分密度与直径、树高、冠幅等主要测树因子的关系。
Secondly, based on the research of massive materials as well as investigation, systematically analyzed the board of supervisors' present situation, achievements and problems.
其次，在研究大量文献资料以及实地调研的基础上，系统分析了我国独资型国有控股公司监事会的运行现状、监督成效及现存问题。
This paper systematically analyzed the etiology, psychologic character, psychosocial problem and psychosocial intervention of the adolescents with Internet addiction disorder.
本文系统探讨了青少年网络成瘾的成因、个性心理特征及其常见的社会心理问题与社会心理综合干预方法。
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