This paper, based on five kinds of strategic consideration, introduced four optimal reservation and developmental strategic control model of non-renewable resources.
在进行了五种战略思考的基础上，构建了四个不可再生资源的最优储备与开发的战略控制模型。
2
The paper expounds the importance and developmental prospect of rationally utilizing non-wood fiber and points out that it is one way to solve the problem of environmental pollution.
阐述了合理利用非木纤维的重要性和发展前景，解决环境污染的主要途径。
3
Objective: To investigate the haploidization of somatic cell nuclei in non-enucleated mature oocytes regarding chromosomes and developmental potential.