A way of determining the cost of production in a process in which all the costs are obtained and the average unit costs of production then determined. The main product, coproducts, and by-products are each separately distinguished.
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。