estate car是什么意思

用法例句

Analysis and countermeasure research on passenger & freight rolling transport between Shandong and Liaodong peninsula;

山东──辽东两半岛间客货滚装 运输分析及对策研究

The design of two-way bridge of cargo and passenger on the same line of 200 kilometer per hour;

时速200km客货共线双线桥的设计

Research purposes: Vibration rules of the track induced by passenger and freight trains for railways with passenger and freight traffic are investigated.

研究目的:分析客货混运铁路专线客车及货车引起轨道振动的规律。

Considering the imperfections of existing forecasting methods of passenger and freight railway volume and the stochastic fluctuation of the volume, based on the theory of gray system, the stochastic grey system model for forecasting the passenger and freight volume was established.

针对现有铁路客货运量预测方法的不足和铁路客货运量的随机波动性,基于灰色预测理论,建立了铁路客货运量预测的随机灰色系统模型。