预可行性研究也称初步可行性研究，是在投资机会研究的基础上，对项目方案进行的进一步技术经济论证，对项目是否可行进行初步判断。
铁路大中型建设项目在审批立项之前，都必须进行预可行性研究。
The pre feasibility study must be put forward before the appraisal and the establishment of the large scale and middle scale railway construction projects.
对预可行性研究与立项、对前期工作的程序等问题结合几个实际例子提出了看法。
Advanced feasibility research, construction project placing, schedule of earlier stage work are discussed with same instances.
商业预可行性研究证明了太阳能集群作为适合特定客户需求的替代选择的技术和盈利前景。
Business prefeasibility analyses demonstrate the technical and financial potential of concentrated solar systems, as a desirable profitable alternative for selected clients.
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