... undercutting 底切；掏槽；钻杆接头下端面磨蚀 under-damped motion 欠阻尼运动 underdamping 弱衰减 ...
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The dynamic responses of a multi-degree of freedom seismic reduction structure with a viscous damped brace under a random earthquake motion model were analyzed.
对安装有粘滞阻尼消能支撑的多自由度减震结构基于随机地震动模型的动力反应进行了研究。
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