In lean burn condition, there is a trade-off relation between NOx and Hydrocarbon emissions, leaner combustion will cause Hydrocarbon emission increasing significantly, i.e.it need more exactly control for air/ fuel ratio. 稀燃条件下,可以大大降低NOx排放,但NOx与HC排放之间存在着trade-off关系,极稀的空燃比将导致HC的急剧增加,因此需要对HCNG空燃比进行精确控制;
The trade-off relation between logistics cost and logistics service has been systemically researched. 对企业物流成本与物流服务之间的效益背反关系进行了系统的研究。
These decisions-making factors tie up and exist widely trade-off relation each other. Due to the complexity of modeling and solution, these decisions-making factors are traditionally plotted out three independent hiberarchy, which is difficult to satisfy the demand of modern logistics system design. 这些决策要素密切相关,存在着广泛的效益勃反关系,由于数学建模和求解的复杂性,传统上将这些决策内容划分为三个层次独立决策,这显然难以满足现代物流系统规划的要求。
According to the trade-off theory of capital structure, I then construct a simple single-period theoretical model to demonstrate the relation between expected costs of financial distress and default probabilities. 同时,作者基于资本结构理论中的权衡理论,构建了一个简要的单期理论模型描述预期财务困境成本与债务违约概率之间的关系。
But NOx and PM are diesel chief emissions, they are hardly to be reduced at the same time because their trade-off relation. 然而NOx和PM是柴油机排放中主要污染物,由于它们之间的矛盾关系很难同时去除。