Additional cost是什么意思

用法例句

To such problems,the gen-eral relationships between the additional cost and the reduced duration are described,a multiobjective programming is presented in the activities such th.

本文旨在对于ＧＥＲＴ网络中时间—费用为非线性关系时，阐述了追加费用与缩短作业时间的一般性关系，进而建立了一个多目标数学规划模型。