elastic bottom造句

Soil - pile interaction in vertical vibrations of a pile with elastic bottom boundaries and its applications
地基中粘弹性桩纵向振动分析与应用
The main original work is as the followings : 1 . longitudinal vibration of an integral pile in an uniform soil with end bearing boundary or elastic bottom boundary undergoing vertical harmonic load is theoretically investigated
主要工作如下： 1 、分别对均质土中完整端承桩和弹性支承桩在垂直谐和激振力作用下的纵向振动特性进行了研究。
It's difficult to find elastic bottom in a sentence. 用elastic bottom造句挺难的