An abbreviation for operational expenditure, it is the on-going cost for operating a process, business, or system. It includes the cost of materials, energy, maintenance, personnel, support services, and utilities. Compare capex.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。