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substructure
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底部构造,基础工事,基础
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详细解释：
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以下为句子列表：
英文: A link substructure composed of a group of linear and nonlinear link units,can be used in the free interface modal synthesis technique to set up nonlinear vibration equations.Then the problem is reduced to less degrees of freedom to solve nonlinear equati
中文: 提出一种由线性连接元和非线性连接元组成的连接子结构，并将这种连接子结构用于自由界面的模态综合技术.利用非线性振动理论的平均方法，求得经模态综合法降维后系统方程的近似解析解.从而将具有连接子结构的自由界面的模态综合技术推广应用到具有局部非线性的复杂结构系统的动力分析，为利用非线性振动理论的平均方法及动力系统理论进一步研究高维非线性动力学系统的振动特性、分岔及混沌行为建立了新的途径.算例表明，该方法具有足够的精度.
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英文: Abstract: The microstructure of as-cast high Cr injection micro-alloying martensitic cast iron and the substructure of martensite in it have been observed under SEM and TEM.The alloying element distribution related to phase formation,as well as the variou
中文: 文摘:应用扫描电镜和透射电镜研究了喷射微合金化的铸态马氏体高铬铸铁显微组织及马氏体的亚结构，并借助X射线衍射与电子探针分析探讨了合金元素的分布与相形成的关系，以及碳化物的不同形式分枝与畸变。
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英文: All main ways of metal strengthening including grain refining strengthening, dislocation strengthening, grain boundary and substructure strengthening, second phase strengthening, solid solution strengthening, as well as TRIP strengthening and so on, have
中文: 金属强化的几种主要方式：细晶强化，位错强化，晶界与亚结构强化，第二相强化，固溶强化，细晶强化以及TRIP强化等都在等温淬火球铁中得到了体现。
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英文: Have you fixed the derrick substructure in position?
中文: 井架底座固定好没有？
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英文: On the background of isolation system of a refrigerator compressor, a new mechanical model of the compressor was proposed, and applying substructure mobility approach, the formula of transmissibility of the isolation system was denied.
中文: 摘要以冰箱压缩机隔振系统为背景，建立柔性基础双层隔振系统力学模型，运用子结构导纳法推导隔振系统传递率公式。
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