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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 product was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and transmission electron microscopy. Silver crystals were monocrystalline with face-centered cubic structures, which was confirmed by electron diffraction and XRD.

利用透射电子显微镜、X射线衍射和傅里叶变换红外光谱对复合纳米微粒的形貌及其成分进行了表征。X射线衍射和电子衍射证明银纳米微粒具有良好的面心立方体单晶结构。

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。

Objective To discuss the clinical X-ray diagnosis standard and clinical manifestation of syn-drome of splenic flexure of colon.Methods 25cases which is clinical symptom was abdominal distention/abdominal pain/constipation or toxic symptomwere selected.The negative result of fiberscope,clinical therapetutic effect was fine which was treated with operation used partial resection or short circuit.

目的 初步探讨结肠脾曲综合征的X线表现在临床诊断中的标准方法收集临床表现反复腹胀、腹痛、便秘或中毒症状，经纤维结肠镜检查为阴性结果，经手术部分切除或短路治疗有临床疗效，利用低压钡剂灌肠显示结肠脾曲综合征为X线表现征象的25例患者资料。

Expose the filter to the x-ray film for 1 hour. The film develop with D-11 developer for 8 ～10 minutes, fix for 10 minutes to get the result.

加ECL发光液于膜上，于x光暗盒中对CT用x光胶片曝光1小时，然后采用D-11显影液显影8～10分钟，一般市售定影剂定影10分钟，得到结果。

High-resolved X-ray diffraction measurements show that the crystal quality of high aluminum mole fraction(x=0.1) is poor and it may cause a large dark current. The window layer acts as a band-choice role. It induces a high responsivity and a wide response band for a higher aluminum mole fraction.

高分辨率X射线衍射仪对材料的测试结果表明，高铝组分(0.1)窗口层薄膜材料的晶体质量较差，导致暗电流增大，而其窗口层的窗口选择作用则可以得到较高的响应率和较宽的响应波段。

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。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。