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The state variables are proved to be able to hit the switching hyperplane and its requirement is discussed based on Lyapunov stability criterion.

基于Lyapunov理论证明了所设计的控制器是滑模可达的，并给出了滑模可达条件。

Uncertain singular systems are transformed into the form of restricted equivalence by a nonsingular linear transformation. By the method of Lyapunov function, a new terminal sliding mode control strategy based on the form of restricted equivalence is proposed for the first time, and the hypersurface of a special terminal sliding mode is given. A terminal sliding mode controller is designed correspondingly such that the motion of sliding mode can be guaranteed and the systems state variables can converge to the equilibrium point in a finite time.

通过非奇异线性变换把不确定奇异系统变换成受限等价形式，利用Lyapunov函数方法，首次提出了一种新的Terminal滑模控制策略，给出了特殊的Terminal滑模超曲面，设计了相应的滑模控制器，实现了滑模运动，保证了系统状态变量在有限时间内收敛到平衡点。

This paper proposes a concept model of user's acceptance behavior, taking ERP system as an empirical study. Structural equation analysis methods are used to validate the hypothetic relationship among the structural variables in the concept model.

构建企业信息系统用户接受概念模型，并以ERP系统作为企业信息系统为例进行实证研究，采用结构方程分析方法对概念模型中结构变量间的关系假设进行验证。

In the early researches on insurance and finance, the objects were supposed to be independent, identically distributed random variables.

在早期的金融保险等研究中，总将对象视作独立同分布的随机变量。

Let be a sequence of independent and identically distributed random variables,with mean and variance .

Corollary 4.2 设相互独立的随机变量服从同一分布，已知均值为，方差为。

Let be a sequence of independent and identically distributed random variables,and ,exist ,then,for any value ,.

Corollary 4.1 设相互独立的随机变量有相同的分布，且，存在，则对于任意正整数，有。

According to the theory of extreme value of independent and identically distributed random variables, the reliability of external unbonded presertressed concrete structures is discussed.

论文讨论了体外筋面积的变化对体外预应力梁可靠度的影响，将其离散化为多个正态分布的随机变量，并根据独立同分布随机变量的极值理论，讨论了体外无粘结配筋对结构可靠度的影响问题。

According to the theory of extreme values of independent and identically distributed random variables, the paper analyses the reliability of unbonded prestressed concrete members.

论文利用独立同分布随机变量的极值理论，分析了无粘结配筋对结构可靠度的影响问题。

The samples according to Nyquist sample rate in one period of OFDM symbol are independent identically distributed random variables.

在过采样条件下，分析了正交频分复用系统在不同采样率时，信号峰值平均功率比的统计特性。

The sufficient and necessary conditions of complete moment convergence for sequence of identically distributedρ-mixing random variables are obtained, which extent and generalize the well-known results.

获得了同分布ρ混合序列的矩完全收敛性成立的充分必要性条件，推广和改进了已有的结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。