tangible cost是什么意思

用法例句

Discussion on valuable?usable expense of reserve.;

关于储量有偿使用费的讨论

Bosed on the actual operation of the transformer in a power plant,this paper analyzes and evaluates the economic performance,total operating costs(TOC)and investment payback period of upgraded S7 and SJ transformers by using total operating costs of transformer and provide reliable basis for the transformer economic operation and create more economic benefits for the enterprise.

本文根据某动力厂在用变压器的实际运行情况,采用变压器总拥有费用(TOC)法,对S7及SJ系列变压器进行更新换代后的经济效益、总拥有费用及回收年限进行分析评价。