该文介绍了推拉式气垫平台的结构，定义了该种非常规地面运载车辆的运动方式，并分析了它的运动学。
A brief introduction to the pull push air cushion platform developed by Jilin University of Technolog was given in the paper.
此标志表明运载工具建立了安全管理系统，来对车辆和货物的移动进行控制。
This marking indicates that a carrier has instituted and documented a safety management system that controls the safe movement of vehicles and goods.
装在滑行装置上的车辆，用于运载人或货物通过冰面或雪地；雪橇。
A light wooden frame on runners, used by children for coasting over snow or ice.
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