航行成本的英文

maritime operating cost

例句与用法

First of all , i summarize the forecast model category and estimate each model in detail , then , i adopt different model to forecast demand , supply , bdi of bulk shipping market . as to demand forecast , i mainly focus on the imitating precision of primitive data , adopt grey forecast model , self - suited filter model separately , and then compose these models as a better one . as to supply forecast , i use econometrics model to describe the complicated relationship of demand , supply , bdi , gnp etc . as to bdi , i try to draw into market integrated factor , describe the relationship of bdi , supply , capacity , speed , rate of oil , navigating capital etc . then finally , i make afterwards evaluation of these models and then analyze future bulk shipping market in detail
对于需求预测，着重考虑对原始数据的拟合精度，经过模型比较优选论证，分别采用了灰色一阶模型，改进的灰色二阶、自适应过滤预测的加权组合模型，得到了相当高的拟合精度；对于供给预测，运用计量经济模型对供给、需求、运价、 gnp 、进出口贸易额等多变量之间复杂的相互关系进行动态模拟，定量的反映出各变量之间的因果关系；对于运价预测，尝试引入市场综合因数概念，化繁为简，通过描述运价与运力供给、载重吨、油耗、航速、燃油价格、航行成本等等诸多因素的关系来进行预测。