纵向激励 meaning in English

longitudinal pumping

In order to study the vibration in the artillery traveling more accurately and completely , a tire force model of non - linear and self - adapting stochastic contacting mark is set up , and this model provides a good method to study the driving system ' s horizontal and vertical excitation caused by the plainness road surface . the suspension of the tractor is simplified by the model of spring - damp system , and the artillery torque rod is also simplified by torsion spring
为了更准确和全面地研究火炮牵引行驶过程中出现的振动，建立了非线性自适应随机接地印迹的轮胎力学模型，该模型能很好地研究路面不平度对火炮牵引系统的垂直和纵向激励；牵引车悬架简化为弹簧阻尼系统；火炮扭转杆简化为扭簧。