The present serious realities of ecological environment deterioration of the grassland in china are presented in the paper through taking concrete and actual examples and data.
本文以具体有力的数据指出了我国草地生态环境恶化的严峻现实，提出建立草业系统是摆脱草地环境灾难的重要手段。
Through a actual compiling examples of the material codes the paer expounds the design principle of compiling system, the plan and method of material code compiling.
通过物料编码实例，阐述了编码体系的设计原则、物料编码编制方案及编制方法。
In this paper we suggested a failure theory for rocks. Through the analysis of actual examples we obtained some useful conclusions.
本文建议一个适用于岩石的强度理论，通过实例分析，得到一些有意义的结论。
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