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Modeling and stability analysis problem of linear switched system are emphasized in this part and main results include:(1) Through investigation in the projection of 〓 on x, where x denotes continuous state vector, a series of sufficient conditions for stability, asymptotic stability and unstability of linear switched system's equilibrium in the sense of Lyapunov are achieved. And also, a sufficient and necessary condition for state bounded stability of linear switched system is received.(2) For a class of periodical linear switched system whose switching sets are a group of ordinal lines starting from the original point, it's proved that state bounded stability can be defined by the running characteristic in a single period (3) Based on linear switched system, the concept of linear switched system network is put forward. Linear switched system network is a complex network interconnected by many linear switched systems.

这部分着重研究线性切换系统的建模与稳定性分析问题，主要成果包括：（1）通过考察〓在x上的投影，得到线性切换系统的平衡点在Lyapunov意义下稳定、渐近稳定及不稳定的一系列充分条件，并得到了线性切换系统状态有界稳定的一个充要条件；（2）证明了对于一类切换集为从原点出发的一组射线的周期线性切换系统，其状态有界稳定可根据一个周期内的系统运行特性来判定；（3）在线性切换系统的基础上提出了线性切换系统网络的概念，线性切换系统网络是由多个线性切换系统交互作用而形成的复杂网络。

Relative stability of C2-C52X2 (X = H, F, and Cl) isomers is determined by both attaching sites and properties of addends. The C2-C52X2 (X = H, F, and Cl) complexes are potential targets in experiments.

加成产物的热力学稳定性由加成基团的种类和加成位置共同决定。C2-C52X2 (X = H， F， Cl)是潜在的实验合成目标。4。

Then, we prepare His-Pxa2pC2-HA by the same way, but dialyse with Triton-X 100 to increase its solubility and skip nicole's column purification step. We analysed the molecular size of this His-Pxa2pC2-HA protein by FPLC.

接著，以同样的方式表现His-Pxa2pC2-HA蛋白，并在透析时加入Triton-X 100，再以胶体过滤层析法分析，发现Triton-X 100会干扰胶体过滤层析法的分析。

The results showed that the hollow nanospheres were 65 nm in sizes, which was smaller than that of the original CeO2 nanospheres. The Ce(subscript 1-x)TiO2 hollow nanospheres were face-centered cubic structure as the same as CeO2 nanospheres.

结果表明，Ce(下标 1-x)TiO2纳米空心球的粒径为65 nm，小于初始状态的CeO2纳米球，并且Ce(下标 1-x)TiO2纳米空心球的结构与前驱体CeO2晶体结构相同，均为面心立方结构。

The soliton hierarchies associated with the modified second order polynomialeigenvalue problems can be factorized into the commuting x- and 〓-constrainedflows, the r-matrices and classical Poisson structures for the x- and 〓-constrained flows are constructed.

与修正的二阶多项式特征值问题相联系的孤立子方程族可以被分解为相互交换的x-和〓-约束系统，本文求出了约束系统的r-矩阵和经典Poisson结构。

The use of a large number of wires in annular Z-pinch implosions has enabled the generation of strong X rays,which is significantly affected by the structure of the wire-array and the assembly precision of the wires.

在利用金属丝阵Z箍缩产生强X射线辐射的方法中，为获得超强X射线，一般采用直径几μm的钨丝构成单、双或多层圆柱面状丝阵负载，其中丝阵负载的结构和装配精度是关键因素。

While under visible light irradiation, Ag,Pt,Pd and Rh exist as Ag~0, PtCl_4, PdO and Rh0 respectively, which results in that the photocatalytic activity of the M/TiO_(2-x)N_x depends on the generation and transfer pathway of photogenerated electron in M/TiO_(2-x)N_x photocatalyst.

而在可见光下，Ag，Pt，Pd和Rh分别以Ag~0，PtCl_4，PdO和Rh~0的形式存在，M/TiO_(2-x)N_x光催化剂的活性取决于光生电子的激发方式和其转移途径。

For the past quarter of a century, NATO has relied upon two different rifle/machine gun cartridges: the 7.62 x 51 mm and the 5.56 x 45 mm.

在过去的二十五年里，北约依赖于两种不同口径的步枪/机枪口径：7.62 x 51 毫米口径

For the past quarter of a century, NATO has relied upon two different rifle/machine gun cartridges: the 7.62 x 51 mm and the 5.56 x 45 mm.

在过去的二十五年里，北约依赖于两种不同口径的步木仓/机木仓口径：7.62 x 51 毫米口径

The flow of magnetons in the magma normally flows in the direction of the Earth's magnetic field, N up, S down, but what would occur in a pool of magma, trapped, under the direct influence of Planet X which is overhead near the position of the Sun.

岩浆里的磁子正常情况下是沿着地球磁场的方向流动的----在北极处上升，南极处下降，但对于一片直接受到行星 X 影响（行星 X 就在太阳附近，地球上方），并被困住的岩浆来说，会发生什么事情呢？

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。