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1·In this raper, a model of continuous wall inserting in sand with a thin layer of grease as a slide surface has been loaded laterally in laboratory.

本文在模型实验基础上，采用有限元方法，对砂、软弱夹层和连续墙三种材料的组合结构进行了非线性分析。

2·The experimental study of the ultrashort optical pulses response and switch properties of semi-travelling-wave semiconductor laser amplifier are given in this raper.

本文对半行波半导体激光放大器的脉冲响应及开关特性进行了实验研究。