tractortrailer是什么意思？

tractor trailer[英][ˈtræktə ˈtreɪlə][美][ˈtræktɚ ˈtrelɚ]拖拉机拖车，拖拉机挂车; 双语例句 1A slow-moving tractor, drawing a trailer拖着一辆挂车的移动缓慢的拖拉机 2A 8-DOF mathematical model of a tractor trailer was established and its simulation was performed by using Matlab/ Simulink.在建立8自由度半挂汽车列车数学模型的基础上，应用Matlab/Simulink仿真软件建立仿真模型。