基本解释常规成本计算法 [会计] 传统成本计算英汉例句双语例句In the system of the conventional costing, the expenditure of research and development is always treated as the expense.在传统成本核算体系下，研究与开发支出往往作为费用处理。conventional costing更多例句专业释义经济学传统成本计算常规成本计算法