For the dynamic analysis of complex mechanical structures (e. g. machine tools) with many joints, usual substructuring methods using interface deformation compatibility are no longer applicable.
对会诸多结合面的复杂机械结构(如机床)的动态分析，由于结合部位的位移不连续性，通常位移协调的动态子结构法已不再适用。
At elevated temperature, the properties of concrete structures are more complex than them at normal temperature, and the mechanical properties of materials become weak seriously.
混凝土结构的性能在高温下要比在常温下复杂得多，材料性能严重劣化，且理论分析的难度很大。
At elevated temperature, the properties of concrete structures are more complex than them at normal temperature, and the mechanical properties of materials become weak seriously.
混凝土结构的性能在高温下要比在常温下复杂得多，材料性能严重劣化，且理论分析的难度很大。
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