查询词典 four-part

Feeding patterns of antenna array are researched and feeding network is designed. Three-unit and four-unit models for the cylindrically conformal microstrip antenna array are set up and their directivities are simulated respectively. Through the comparison of the simulation results, the four-unit array is proved to be feasible.

对天线阵列的馈电方式进行了研究，设计了天线阵列的馈电网络，建立了三单元和四单元柱面共形微带天线阵列模型，对方向性分别进行了仿真分析，比较仿真结果，选用了满足工程需要的四单元阵列。

Chapters four, five and six are supposed to be the cynosure in this thesis. In chapter four, a general description of the development of equivalence theory is presented. In comparison with the equivalence theories presented by Jacobson and Catford, the author elaborates on Nida's equivalence theory, especially the essence of his functional equivalence theory.

第四，五，六章是本论文的核心部分，在第四章，作者描述了对等理论的发展和演变，并详细介绍了奈达的翻译对等理论，尤其是功能对等理论，为全文做了理论铺垫。

Scientific studies find that the four kinds of daintiness that human can perceive respectively consist in four representative foods: kelp, mushroom, bonito fish, and chicken soup.

科学研究发现，人类能感知的美味主要有四种，分别存在于四种代表性食物当中：海带、蘑菇、鲣鱼、鸡汤。

Inquests of novel disseisin , of mort d'ancestor , and of darrein presentment shall not be held elsewhere than in their own county courts, and that in manner following; We, or, if we should be out of the realm, our chief justiciar, will send two justiciaries through every county four times a year, who shall alone with four knights of the county chosen by the county, hold the said assizes in the county court, on the day and in the place of meeting of that court.

新近强占令、遗产占有令和最终圣职推荐令案件的审理工作应当在案发当地郡法院进行，程序如下所述；由我们，或者我们不在国内时，由我们的司法长官，每年分四次向每郡派出两名法官，与郡内选出的四名骑士一同在郡法院开会的时间地点审理上述占有令状案件。

Apart from the preface, the paper can be divided into four sections. Section 1, studies in four aspects: the basis characteristic of the tradition textile industry, the textile industry and regional economic, the advan-ment of the science and technology and the moderniznation of the textile industry. Section 2, addresses the textile of YunNan was in hot water in ninety ages, and why, thereout adopt a series of measures. Section 3, analyses in the textile of VunNan"s chances and challenges in three aspects: acceding to the WTO, actualizing of"the westwards great exploitation and the course of market. Section 4, according to the deciding route of development tactic, bring forward the textile of YuNanThow to debouch the hot water, the emphases and the composition in reason of the development for the future.

全文除序言外，共分四部分：第一部分：主要从传统纺织工业的基本特点、纺织业与区域经济、科技进步与纺织工业现代化三个方面进行了分析；第二部分：从云南纺织工业90年代陷入困境，为何陷入困境及采取的措施进行了分析；第三部分：对加入WTO、实施西部大开发、市场化进程带来的机遇与挑战进行了分析；第四部分：按照已定的发展战略思路，提出云南纺织业如何走出困境，二次创业，今后发展的重点和合理布局。

A group of four, i.e., four pulses used to express a decimal digit or a hexadecimal digit.

4个数位一组，用以表示十进制或十六进制中的一位数字的4个脉冲。

A group of four, i.e., four pulses used to express a decimal digit or a hexa decimal digit.

4个数位一组，用以表示十进制或十六进制中的一位数字的4个脉冲。

The following are main points in the thesis.(1) On the basis of widely researching of the domestic and overseas references, there are four types of depolarizers being summed up and introduced in this thesis, the four types are spatial averaging depolarizer, time averaging depolarizer, fiber ring depolarizer and spectral averaging depolarizer.

本论文主要完成的工作是：(1)在查阅了大量的文献的基础上，总结了四种类型的退偏器，空间偏振态平均退偏器、时域平均退偏器、光纤环退偏器、光谱平均退偏器，并分别对四种类型的退偏器的工作原理进行了深入的研究，为每种退偏器的设计方法建立了数学模型。

The main research contents and results are given as follows:(1) Principles and characteristics of different types of polarization controllers are analyzed, the compare of the difference of these polarization controllers are discussed based on them, drawn a conclusion that the polarization controller which based on squeezing fiber and has variable delay quantity are suitable for high speed optical communication system.(2) The reset principle of the typical four channel polarization controller which is based on squeezing fiber is analyzed, and the design of its concrete reset scheme is given based on them. The reset process and the corresponding operation list are given in detail.(3) The systematical experiment is made when the typical four channel polarization controller is put into the PMD compensator. The experiment result showed that the channel which needs reset can efficiently return to the mean place, and the effect of reset was good, it didn't cause any badness infection on PMD compensation.(4) A new type optical signal time-domain depolarizer is given, and a new PMD compensate method is given based on it.

由此得出延迟量可变型光纤挤压型偏振控制器适用于高速光通信系统的结论；(2)具体分析了典型的四通道光纤挤压型偏振控制器的复位原理，并在此基础上对其进行了具体复位方案的设计，给出了各种情况下的详细复位流程和相应的复位操作列表；(3)将四通道光纤挤压型偏振控制器应用于偏振模色散补偿器中进行系统实验，实验结果表明，需要复位的通道能有效地回到中间值，复位效果良好，且复位未对PMD补偿产生不良影响；(4)设计了一种新型的光信号时域退偏器，并基于该退偏器提出了一种新型的偏振模色散补偿方法。

First, select four kinds of main risks source from bigly celebrate the main risk in region source, namely the flood, drought, sand-dust weather and petroleum pollution accident, etc. According to the different a request for to habitat, study this 19 kinds of landscapes ecosystem type of the Regional induce for 7 kinds of ecosystems system: Then the marsh of bulrush, lakes and reservoirs , salt alkali wasteland, prairie, island form wood, farmland, town. The difference is proceeded by characteristic according to each type ecosystem to the analysis of four kinds of main risks source, including the certain risk all rate, delimiting the space distribute, analyzing the risk strength to the receptor etc. At proceed the revelation the different from endanger to analyze the inside, this text borrows ecosystem index number that this index sign to reflect primarily habitat the ecosystem meaning of the type of habitat the different from position, with weak an index number to show the destructibility of the habitat, from but compute each ecosystem that is lost by ecosystem system an index number.

首先，从大庆地区主要的风险源中遴选出四种主要的风险源，即洪涝、干旱、沙尘天气和石油污染等；依据不同生物类群对生境的要求，将本研究区域的19种景观生态类型归纳为7种生态系统：即芦苇沼泽、湖泡库渠、盐碱荒地、草甸草原、岛状林、农田、城镇；对四种主要风险源的进行分析，包括确定风险概率，划定空间分布，对风险受体的作用强度分析等；在进行暴露和危害分析中，本文主要借生态指数这一指标来反映不同生境类型的生态意义和地位，以脆弱度指数来体现不同生境的易损性，从而计算出各受体生态系统的生态损失度指数；由于各主要风险物质对风险受体的作用强度是不同的，对形成区域性生态风险的作用大小也有差异，因此本文采用层次分析法对主要生态风险物质进行综合评价，并把判断矩阵排序权值的合理计算问题归为—非线性化问题，并提出用基于遗传算法(GA[5])的层次分析模型进行权重分析；进行风险表征，即综合前面两个阶段的信息，对环境中风险的性质和强度以及风险评价过程中不确定性问题进行分析与描述，并划分出五级生态风险区；最后，根据划分的五级生态风险区的特征，分别提出针对各生态风险区的生态风险管理对策。

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。