本文从土与结构动力相互作用的观点出发，提出了用动力有限元分析计算地下结构上地震动土压力的方法。
Based upon the point of view of soil-structure interaction, this paper presents a procedure for evaluating the dynamic earth pressure on underground structures under earthquake motion by FEM.
根据上述任何一种观点，简单的事物以简单的规则进行相互作用就会快速的变得复杂。
Simple things interacting with simple rules quickly become complex by either of the above perspectives. For example
从时间测量精度出发，通过场的观点说明相互作用瞬时性只是一个近似的概念。
Proceed from precision of surveying time, explanation of the interaction momentary is a approximate concept only by the view of field.
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