逆步 meaning in English
contragredience
contragredient
Examples
- Contragradient linear transformation
逆步线性变换 - At the beginning of this article , we give the analysis about the principle of external condensation . we find out that the most important factor in the condensation is the temperature of the air in the system . and we point out the factors which can make influence in the external condensation , such as the temperature and the humidity of the environment , the temperature and the pressure of the supplying air , the load of the system , the area of passage of speed control valve , and so on . next , we give the mathematics model of the pneumatic system using the knowledge of aerodynamics and heat transfer theory . and using the finite difference method and the numerical analysis we can get the solutions of the model . we use c program to simulate the model
本文首先对气动系统外部结露的原理进行了分析,指出了气动系统内部气体温度下降是气动系统外部结露根本原因,提出了影响气动外部结露的主要因素,包括环境温度、环境湿度、供气压力、供气温度、气缸负载和调速阀开度等。然后应用气体动力学、气体热力学和传热学对气动系统建立数学模型,用逆步进有限差分法和数值分析算法对所建模型进行求解,利用c语言编制程序对气动系统模型进行仿真,给出了气管及气缸内气体的各个时刻的状态参数。 - Some stiffness matrices of special elements such as rubber bearings and components with field are derived from primary - secondary and inverse transform in structural matrix analysis . then , seismic response analytical models and non - isolated continuous rigid frame bridges are set up , while considering the interaction of soil - pile - structure and traveling wave effect simultaneously . finally , the seismic time history response of the two models is calculated by means of the finite element method , and the results show that the isolated bridge posses powerful earthquake resistance
首先论述了公路大跨径桥梁的地震反应分析方法，其中包括桩-土-结构相互作用、行波效应等因素对结构物的影响；其次，利用结构矩阵分析中的主从变换和逆步变换，推演了几个特殊单元的刚度矩阵，包括橡胶隔震层单元和带刚域构件单元；最后，考虑桩-土-结构相互作用和行波效应的结合，分别建立隔震与非隔震连续刚构桥地震反应分析模型，通过有限元法对两种结构进行时程分析，结果表明：隔震层上部结构的地震加速度反应、位移反应均明显减小，这说明隔震的连续刚构桥具有很好的抗震能力。