前后间距 meaning in English

fore and aft clearance
foreandaft clearance

In order to study the effect of the number of vehicle and inter - vehicle distance on the aerodynamic characteristics of vehicle platoon in intelligent transportation systems ( its ) , a single vehicle is simulated first and its results are compared with that of wind tunnel test
摘要为了研究车辆前后间距和车辆数目对智能交通系统中队列行驶车辆气动特性的影响，首先对单辆车进行数值模拟，并将模拟结果与风洞试验结果进行对比，然后对两辆车在5种不同间距下以及3 ~ 7辆车在固定间距下队列行驶的情况分别进行了数值模拟及分析。