本文探讨了松散地面上，履带车辆的重心位置对牵引性能的影响。
It is studied that the position of gravity center of a vehicle produces influence upon the tractive characteristics on loose ground.
事实上，在一些宝塔的设计中，它甚至不停留在地面上，而是从塔顶悬吊下来——松散地悬挂在建筑的中间。
In fact, in some pagoda designs, it does not even rest on the ground, but is suspended from the top of the pagoda—hanging loosely down through the middle of the building.
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