General motion low of back-pressure ports position is developed by solving thermodynamic model of compressor and carrying out dynamicalcomputation.
通过求解压缩机热力学模型和进行动力计算，分析了背压孔的一般运动规律。
2
Structure calculation: include the static, dynamical and flection stabilization computation of bridge 's superstructure and the substructure.
结构计算：含桥梁上下部结构的静力、动力及屈曲稳定计算。
3
Generally speaking, a computer is a dynamical system whose state variables encode information about the external world. In short, computation equals coding plus dynamics.