由于现有加工方式的局限，使得其利用成本较高。
The usual processing route makes its utility cost high for its limitations.
利用成本优化、概率论等理论和方法，制定经济合理的采购批量。
The economic order quantity will be decided by applying the theory and method of optimizing cost and probability.
从其开发利用成本来看，地热能源相对于其他可再生能源更有发展潜力。
Furthermore, with respecting to the cost of explorations and exploitation, geothermal energy has more future development potential.
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