第二，运用实证研究法、调查研究法、仿真模拟法建立了广西北部湾港口群物流系统SD模型。

Second, this paper establishes a SD model for Guangxi Beibu Gulf port group logistics system using of empirical research method, survey research method, simulation method.

youdao

运用调查研究法、战略分析法从广西北部湾港口群物流系统的现状着手分析该系统各子系统目前存在的主要问题。

And it analyses major problems of plant systems from existing condition of Guangxi Beibu Gulf port group logistics systems using of survey research, strategic analysis methods.

youdao

运用调查研究法、战略分析法从广西北部湾港口群物流系统的现状着手分析该系统各子系统目前存在的主要问题。

And it analyses major problems of plant systems from existing condition of Guangxi Beibu Gulf port group logistics systems using of survey research, strategic analysis methods.

youdao