单中心的

As a private mobile communication system, The digital trunkingmobile communication system was boomed in 1990's, and before this, the appliedprivate mobile communication systems in market are almost the analog systemwith analog voice and digital signalling. And there are no data referring to thesystem design and parameters chosen. It includes the wireless channel accessalgorithm of the mobile terminals, single base station capacity in large regional networks, link designing schemes between the switching control center and basestation as well as the study of the service quality for the multiple traffic. Theseindispensable parameters in design a digital trunking communication system arestudied in this dissertation and some instructive achievements can be got. To provethe correction of the theoretical study, the result was tested with the popularsystem of pan-European digital trunking communication system.

数字集群移动通信系统是九十年代中、后期兴起的专用移动通信系统的一种新体制，在此之前国际、国内市场使用的都是数字信令、模拟话音集群移动通信系统其涉及领域是模拟体制，对数字集群的系统设计的有关参数、方法等的选用及其性能表现并无成熟的文献可供参考，如移动终端的无线信道接入算法、大区组网单基站系统的容量、基站和交换控制中心间的链路设计和多业务种类的服务质量等都是数字集群基站子系统进行设计和开发必须解决的关键技术。

Under the cases of the linear interconnected systems with all its subsystems are one dimension, a theorem to judge the properties of single loop interactions has been given; the study also indicated that the properties of interactions cann't independent of the properties of subsystems in the multi-loop interaction conditions, and a all field root locus method has been proposed to decide the properties of interactions; a interaction stabilizable theorem has been given, and the efficacy of interactions with respect to the interconnected systems has been configured, Some primary results are reported which are induced by using a method of computer aided test to study block interactions, the stationary feedback efficacy of closed loop interactions have been discussed and a stability guess has been proposed.

本文提出互连系统的合作稳定性概念及其原理，给出了互连系统的本原稳定度、稳定中心、回路关连的级数以及关连的性质等基本定义；并在此基础上对线性互连系统进行关连分析，给出了一系列涉及到关连与互连系统稳定性关系的命题、引理、定理及其证明；其中，在子系统都是一维的线性定常互连系统情况，得出了单回路关连性质判断的定理；并指出在多回路关连条件下，关连的性质不能独立于子系统的性质，以及用全域根轨迹法判断关连性质的方法；给出了关连可稳定理，并对关连对互连系统的影响作用进行了分析。本文还用机辅试验的方法研究块阵关连并给出一些初步结果，本中还探讨了回路关连的静态反馈作用并提出一个判稳猜想。

Tengchong, a frontier town full of mildness, with clean streets and clear sky, travelers will find homelike atmosphere here to relax. Cycling in the morning to breathe the clear air, to bath the first sunshine, to find a food court for breakfast, ciba, ersi, and so on, to start a new day of happiness. Almost every house of Tengchong residents has a beautiful dooryard; some great old buildings in the village are full of classicism and mystery. Tengchong International Youth Hostel is located on the biggest private garden-Yuquanyuan, which is in the center of Tengyue old village.

腾冲是个清醒而又温情的边疆小镇，有宽净的街道和无边的绿色，让漂的人有充足的空间静静呼吸……清晨骑着自行车疾驰，呼吸着清冽的空气，第一道阳光明亮刺目得让人微微眯起双眼，街边随处是热气腾腾的早点铺，稀豆粉粑粑、煮饵丝……让内心沉静的人对新的一天有了美好的期许……腾冲人挣了钱有两用，一为供子女读书二为盖房子，所以不论贫富，家家单家独院，有个漂亮的天井，自古留下来的众多古老民居更是青砖瓦房，蔷薇藤蔓……腾冲国际青年旅舍开设于古朴别致的滇西最大私家花园--玉泉园内，正处腾越古镇文化中心。

T curve of the corresponding solvate trends towards the lower temperature A linear relationship was observed between the mol. vols. of the monohalogenated benzene and the Tc values of the corresponding solvates, with the only exception being the chlorobenzene analog. This anomaly is attributed to a first-order phase transition occurred around 185 K, which coincides with the Tc value of this solvate.

特别在单卤代苯系列中，溶剂的分子体积与Tc值呈线性关系，但氯苯溶剂合物是例外：后者的反常现象主要是由晶格内部的Tc≈185K时伴随发生了与自旋变异协同的一级相变所造成，这个相变过程已为示差扫描量热测定和Mossbauer中心位移对温度的曲线呈现的不连续性所证实。

CBD寸土寸金due to geographical location, and large amount of office space everywhere, but Wantong Center Product designed to shift the standard four-storey area of 745-1500 square meters, single-family area of 15,000 -3.2 million square meters of body volume of office space, hopes to differentiate products in the region and gain market advantage and uniqueness.

由于生物多样性公约寸土寸金的地理位置，以及大量的办公空间无处不在，但万通中心产品旨在改变标准的四层面积745-1500平方米，单户面积15000 -3.2万平方米的体数量的办公空间，希望能够区分产品在该地区获得更多的市场优势和独特性。

The apparent electron transfer rate constants kapp of azobenzcne to the underlyingelectrode are found to fall off exponentially with increasing the length of alkyl chain spacers. Theelectron tunneling constant P for the electron transfer in the present systenl are estimated to be1.35±0.20 per CH2 from the logarithndc k.p. versus n (nunther of methylenes in the alkyl chainspacer) plot.

而利用电化学活性的自组装单分子膜进行这方面的研究有其独到的优点，可以在分子水平上设计和改变电子转移距离以及电活性中心所处的微环境，为考察界面电化学的一些基本问题，例如电子转移速度与距离的关系、界面结构的影响等＊－q提供了较为理想

By simulating the absorption spectrum of molecule iodine absorption filter ranges from 470nm~550nm, this paper selects the absorption spectrum of molecule iodine absorption filter that satisfies the requirement of frequency discriminator in detecting system and ascertains the center emission frequency of laser emitter.

以基于边缘探测技术的激光雷达监测大气信道和海洋水下信道环境参数为例，通过仿真出碘分子吸收滤波器在470nm～550nm区间范围内的吸收光谱谱线，选择出合适的吸收谱线并确定发射激光信号的中心频率，并在此基础上，给出了满足探测要求的激光发射信号单稳频指标，为实际探测系统的设计奠定基础。

The characteristics of the three main parts of mono-pulse slotantennas——longitudinal radiating slot, center-inclined slot and magic T using couplingslot, are analyzed. Also the influence of the design parameters, such as the length and width of the slot etc., are analyzed. The engineering curves of design are given, and some beneficial conclusions are gained too. These also give powerful supports for the design of slot antennas.

针对毫米波单脉冲波导缝隙天线的三个主要组成部分——波导宽边辐射纵缝、波导宽边中心斜缝和宽边缝隙耦合魔T的特性及其各项设计参数(如缝隙长度、宽度、半高波导、全高波导等)对性能的影响进行了较为全面、详细的分析，给出了相应的工程设计曲线，得到了一些有益的结论，为高性能波导缝隙阵列天线的设计提供了有力的参考。

Aint Croix was a sparse and bare island where was the central seat of triangle trade zone with an unnoticed harbor providing an awesome shelter for the going and coming pirates' goods-loaded vessels. In January 1717, British soldier defeated the buccaneers and the survivors of the war was near the margin of death and was saved by the two sloops fleeing to Virgin Gorda.

t、 Croix在海盗的黄金时期还只是一个荒无人烟的小岛，由于处于三角贸易区的中心位置，又有一个不为众人所知的隐蔽的港口，所以为过往的海盗提供了非常完美的隐蔽场所。1717年1月，英国的士兵在此击败了海盗约翰，战争的幸存者在这里几乎被饿死，恰巧另外两个海盗单桅船救了他们并一起逃往了Virgin Gorda。

St. Croix During the Golden Age of Piracy, St. Croix was an unclaimed, largely abandoned island with a protected harbor and a good position on the Triangular Trade—perfect for a passing pirate hideout. In January 1717, a British man-of-war shelled pirate John Martel and his crew here; the survivors were left stranded and starving until two other pirate sloops arrived and absconded with them to Virgin Gorda.

St。 Croix在海盗的黄金时期还只是一个荒无人烟的小岛，由于处于三角贸易区的中心位置，又有一个不为众人所知的隐蔽的港口，所以为过往的海盗提供了非常完美的隐蔽场所。1717年1月，英国的士兵在此击败了海盗约翰，战争的幸存者在这里几乎被饿死，恰巧另外两个海盗单桅船救了他们并一起逃往了Virgin Gorda。

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。