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Firstly, we research the Vlasov antenna with reflector mainly. A new method to calculate the radiation of the antenna is founded with Vectorial Theory of Diffraction, and the corresponding program is made. The reflective characters of Vlasov antenna are studied with Moment Methods, and the results show that the total reflected energy is less than 0.25%. The radiation patterns of the antenna are analyzed, and the formulas to estimate the wave beam parameters and to design the antenna are provided. The feasibility of radiating high-order modes by Vlasov antenna is also discussed and verified. The hermetization of the Vlasov antenna is researched and the results show that with such kinds of hermetization the antenna can work under gigawatt level. The design of the mode converter from TEM to TMoi is studied, which is useful when the TEM coaxial mode is radiated by Vlasov antenna. At last, the flared-end Vlasov antenna is also discussed.

在Vlasov天线方面:用矢量绕射理论建立了天线辐射场的计算模型并编写了计算程序,该程序计算结果在主瓣上与实验测量吻合良好,近旁瓣也基本一致;利用矩量法计算了天线的反射系数,表明该天线有较小的反射,总的能量反射小于0.25%;详细分析了天线的辐射特性,给出了天线辐射波束相关参数的估算公式和天线设计公式;进一步研究和论证了Vlasov天线辐射高阶轴对称模的可行性;对天线的密封方式和功率容量进行了讨论,结果表明在不需很大密封罩的情况下可以获得GW级的功率容量;为了用Vlasov天线辐射同轴TEM模,研究了TEM-TM_(01)模式转换器的设计,得到了一些基本规律;最后,介绍和分析了带有锥形喇叭的Vlasov天线。

The mechanism was to improve the main segment of post-insulin receptor, regulate the metabolism of lipid and the index of blood rheology, and lessen the weight etc. It played general function at diverse targets and segments. 2. The research was found to be true and feasible, which provided scientific new view and effective therapy. It founded good basis so as to offer the new theory of treating IR of type 2 DM, improve clinical effect and develop herbals with higher efficiency and lower toxicity.

本研究从理论、临床与实验等方面对2型糖尿病IR的病机、治法、疗效与机理进行了系统观察研究,充分验证了对本病的病机演变与治疗方法理论认识的正确性与可行性,为中医药防治2型糖尿病IR提供了一种科学实用的新思路与确实有效的新方法,并为建立中医药治疗2型糖尿病IR的新理论,进一步提高临床疗效,开发出高效低毒的治疗药物,奠定了良好的基础。

The recovery of tin and nitric acid from the spent solder stripper, and the feasibility of recovering nitric acid were investigated by determining diffusion dialysis coefficient of the dialysis membrane for different spent liquor including iron,copper and tin.

通过考察铁盐、铜盐和亚锡盐对硝酸扩散系数的影响研究了采用扩散渗析法从废退锡液中回收硝酸的可行性,实际样品的研究表明,扩散渗析法回收硝酸的回收率在70%以上。

This research stress on both of water-saving irrigation technique and engineering reform plan in the irrigation, investigates current situation and main existing problem including geography, geology, social economic condition and so on....

本文研究主要从灌区节水灌溉技术和工程改造方案两方面入手,调查研究灌区现状及存在的主要问题、灌区的自然地理、地质、社会经济等基本情况,通过灌区的水资源供需平衡分析,论证了灌区实施节水改造的必要性和可行性。

The feasibility of utilizing FAI injection system on a 50 cm^3, twostroke motorcycle engine is studied experimentally. Injection directions, injection timing and fueling are studied specially at the small and full throttle opening conditions to clarify their effects on emissions, fuel economy and engine power.

试验研究了FAI直喷系统在50立方公分二冲程摩托车发动机上应用的可行性,着重研究了在小节气门开度和节气门全开条件下,喷油方向、喷油提前角以及喷油量对排放、经济和动力性能的影响。

Taphonomic reconstruction of ecology and preservation depends on the applicability of analogous processes in modern ecology and limnology.

鱼化石埋藏学方法在古湖泊环境研究中主要是利用鱼死亡及其骨骼解体和保存的方式,去推测湖泊的水文状况、沉积环境、群落结构、鱼类的生活史、死亡方式和保存特征等,这种方法的可行性取决于对现代湖泊中生物与环境对应关系的观察研究。

The reinforce experiments of the SCM system is made. With the help of the failure recuring and automatic detection function of the SCM used in EMP effects experiments, the reinforce methods of each failure is studied, and the feasibility of each method is validated.

进行了单片机系统的加固实验研究,借助用于电磁脉冲效应实验的单片机系统的故障重现及自动诊断功能,系统地研究了每一种故障现象的加固方法,并验证了各种方法的可行性。

Based on the study of model test of post-tensioned prestressed concrete box-shaped beam, the feasibility and correctness of this structure being applied for pillar wharf with bridge crane is tested and verified, which provides reference for calculation of post-tensioned prestressed box-shaped beam of bridge crane design This structure can be applied for port construction at large water amplitude area rationally

港口桥吊后张预应力起重机梁的模型试验研究重庆交通学院王多银陈嘉勤摘要通过对后张预应力混凝土箱梁模型试验研究,验证该结构用于桥吊墩式码头的可行性,寻求预应力桥吊箱梁的理论计算依据,并验证其正确性,为后张预应力桥吊箱梁的设计提供参考计算方法,使该结构能科学

To discuss the feasibility of applying this technique into the practice of engineering, this paper references the real project of the running tunnel from Great Showplace to Scientific House in Shenzhen Metro, uses the geotechnical centrifuge of Southwest Jiaotong University, then researches the settlement of the ground and the influence on the pipeline underground in stratum with abundant water by the technique of undraining spin-spay pile, at last draws a conclusion about the principle of the ground settlement with the construction method of excavating soil rich in water without dewatering at Shenzhen Metro.

为了探讨离心模型试验技术这一研究手段在地下工程中应用的可行性,结合地质、水文、结构较为复杂的深圳地铁大~科区间暗挖施工SK3+355断面的具体实例,应用我校新近建成的100gt土工离心试验机,采用离心模型试验技术对在富水地层应用水平旋喷桩工艺进行控制降水施工对地表沉降变形及地下管线的影响进行了研究。

The CNC grinding path generation algorithm and software are developed for the eight-axis CNC cutting tool grinder with five-axis simultaneous axes. The result of simulation shows that the algorithm is corrected and the software can be used in the practical production through the further work.

本文的研究工作及磨削加工算法,针对八坐标五联动数控工具磨床进行了软件开发,通过仿真结果验证了理论研究工作及加工算法的可行性,对于螺旋刃刀具数控加工具有一定的理论意义和实用价值。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

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