基于进入系统的时间，写操作具有幂等性(不管操作多少次结果都不变的性质，比如取绝对值的函数就具有幂等性)和交换性(操作顺序不影响结果，比如加法就具有交换性)。
Write operations are idempotent and commutative, based on the time they enter the system.
高架桥系统对周围环境的影响是通过高架桥的柱子而产生的，其特征是荷载位置不变，但大小随时间变化。
The effect of viaduct system on near environment is generated through the column of viaduct, so the characteristics of loads are that the action points do not change but the values change with time.
同时，考虑了连续时间线性时不变系统的渐近稳定性问题。
In addition, we consider the asymptotic stability of continuous linear time-invariable systems.
同时，考虑了连续时间线性时不变系统的渐近稳定性问题。
In addition, the asymptotic stability of continuous linear time-invariable systems is studied.
对于确定的数据采集系统，信号噪声主要来源于系统本身，而且在短时间内系统可视为时不变的。
Signals noise mainly comes from system itself, and in a short time the system can be regarded as constant.
本文经过重新定义增广误差信号，给出了有延时情况下线性时不变离散时间单输入单输出被控对象的模型参考自适应控制系统的超稳定性设计方法。
This paper presents a hyperstable scheme for designing discrete model reference adaptive control system for lineartime-invariant SISO plant, based on a redefined augmented error signal.
对一类离散时间线性时不变系统，研究当执行机构发生连续增益故障情况下的可靠保性能状态反馈控制律的设计问题。
This paper is concerned with the reliable guaranteed cost state feedback control problem for discrete-time systems with actuator failures.
研究准坐标下完整力学系统在时间不变的无限小变换下的统一对称性。
This paper discusses the unified symmetry of a holonomic mechanical system in terms of quasi-coordinates under special infinitesimal transformations in which time is not varied.
被假定为时间不变，范数有界，且存在于系统和控制输入矩阵的不确定性。
The uncertainties are assumed to be time-invariant, norm-bounded, and exist in both the system and control input matrices.
模拟中，系统逐渐达到湍流状态，随着系统的不断演化我们发现如下事实：能谱指数随时间并不是不变的，而是在较宽的范围内变动；
After reaching a turbulent state, the system continues its evolution which exhibits that the energy spectrum index is not a constant instead of a wide range of changes in time.
模拟中，系统逐渐达到湍流状态，随着系统的不断演化我们发现如下事实：能谱指数随时间并不是不变的，而是在较宽的范围内变动；
After reaching a turbulent state, the system continues its evolution which exhibits that the energy spectrum index is not a constant instead of a wide range of changes in time.
应用推荐