查询词典 freight train

Test results are as follows: Ballastless track structures can effectively improve the dynamic action of train loads on subgrade beds, the measured stresses and acceleration rates are far smaller than those measured with ballasted track structures; axle loads have remarkable influence on dynamic stresses of ballastless track subgrades and have some influence on acceleration responses; speeds of either motor car units or freight trains all have limited effect on dynamic embankment responses; after attenuating over 3 meters high embankment, neither dynamic stresses nor acceleration rates are influential to net cushions at the bottom of column-net structure subgrades

结果表明：采用无砟轨道结构可以有效改善列车荷载对路基基床的动力作用，测得的动应力与加速度值均远小于有砟轨道结构测得的值；列车轴重对无砟轨道路基的动应力影响明显，对加速度响应也有一定影响；无论是动车组还是货物列车，其运行速度对路堤部分的动响应影响均有限；动应力与加速度经3 m 高的路堤后衰减，对桩网结构路基下部的网垫层已基本无影响。

Researchers crashed a five-passenger-car train going more than 48 kilometers an hour into a locomotive with two freight cars.

研究人员设置了一辆时速高于48公里挂有五节客车车厢的火车与一辆挂有两节货用车厢的机车的碰撞实验。

Furthermore, it also can provides springs of various vehicle, such as train、truck、motorcycle、and freight truck etc..

并能生产出各种车辆，如火车、汽车、摩托车、运输车上的各种钢板、钢丝、弹簧。

The car brake system is a key part to ensuring safe operation of train. Compared with existing 21 ton axle load freight car, the heavy hual car improves greatly in performance which demands preferable brake system.

重载铁路货车的车辆载重和运行速度较我国现有的21t轴重货车均有较大提高，因此对车辆制动系统的要求也更高。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。