In this paper a finite element model of hermetically sealed electromagnetic relay is built, through normal modes analysis and frequency response analysis, the vibration transitive path is studied.
军用密封电磁继电器是广泛应用于运载火箭、导弹、卫星等武器装备系统与航天系统中的关键元器件，工作环境的复杂性要求其必须具备良好的耐力学性能。
Then the energy calculation and analysis for two normal run modes of the Water Source Heat Pump (WSHP) residential central air-conditioning were done at the concept of partial load characteristic.
并在考虑了水源热泵的部分负荷特性对机组效率的影响之后，对水源热泵住宅中央空调系统的两种常见工作模式进行了全年能耗计算与分析。
In this paper the theory of dynamic analysis is proposed by adding again and again normal modes of vibration of rc (reinforced concrete) beams under the elastic loads, and an example is given.
研究钢筋混凝土梁的动刚度随外荷载的变化规律，对准确分析其动力响应有极其重要意义。采用振型叠加法，导得了弹性加载纯弯梁的动力分析理论，给出了确定梁动刚度的方法。
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