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In this paper the dimension parameters which influence the electrical properties of the biconical antenna is discussed by means of simulation and experimental test. And a biconical omni-directional antenna array operating within 0.8~3GHz is designed. Its design parameters and the results of the simulation including curves of the VSWR, radiation pattern and the gain within the band are also given.

本文通过仿真与实验测试对影响双锥天线电性能的各种尺寸参数的作以探讨,并且设计了一种可工作于0.8~3GHz的宽带双圆锥全向天线阵,给出了该天线的具体结构尺寸以及仿真后的VSWR数据曲线,E面,H面辐射方向图和频段内各频点的增益值,以及此天线在0.8~3GHz范围内的VSWR测试数据曲线,并进一步提出了一些设计此类天线的关键点。

Specifically, we research the stability andsensitivity analysis of perfect equilibrium of bimatrix game through the relation ofperfect equilibrium and linear programming.

第一章为背景知识,介绍了博弈论的出现,发展,以及现况,描述了博弈论的类型以及理论结构。叙述了非合作博弈论的一些成果,并通过经典例子来认识非合作博弈。

The journal, published since 1973, publishes original research contributions to plant protection sciences, including full papers, review articles and research notes; guest editorials; and abstracts of presentations at international meetings held in Israel, and at binational congresses with Israel but held abroad, encompassing the biological, chemical and molecular aspects of entomology, plant pathology, virology, nematology, and weed sciences, including insecticides, fungicides, herbicides and other biocides, with emphasis on new approaches in the control of pests and diseases.

杂志从1973年开始发行,刊载植物保护科学的原创研究投稿,包括完整的论文,评论文章和研究札记;特约社论;以及在以色列举行的国际会议,和在色列举行的两国会议的摘要,内容覆盖昆虫学的生物学,化学和分子方向,植物病理学,病毒学,线虫学,以及杂草科学,包括杀虫剂,杀菌剂,除草剂,和其它生物杀灭剂,重点是害虫和疾病控制的新方法。

Because plastic does not biodegrade and is man-made, plastic goods have already been labeled as vulgar, cheap and disposable.

塑料的万年不坏以及人工的污名化,早已替塑料品蒙上一层跳脱不去的佣俗层次以及随手可弃的低廉地位。

Biogeography The study of the distribution of plants and animals, both past and present, and its interpretation in terms of ecology, in particular the distribution of world vegetation types and the interactions between humans and their environment.

生物地理学:研究过去和现在动植物分布,以及根据生态学理论对此做出的解释。特别是研究世界植被类型的分布以及人与环境之间的相互作用。

GSBS provides training in 21 major areas of study and an interdisciplinary option, including biochemistry, biomathematics and biostatistics, cancer, cell, human and molecular genetics, neuroscience, virology and gene therapy so on, and curriculum in space life sciences, biostatistics and vascular biology.

研究所提供了21个学科领域的研究以及学科间的研究,包括生物化学,生物数学和生物统计学,癌,细胞,人类和分子遗传学,神经科学,病毒学和基因疗法等,以及空间生命科学,生物统计学和血管生物学的课程。

The principal units of the Division include three departments, Cell Biology and Neuroscience, Genetics, and Molecular Biology and Biochemistry, as well as two sections, the Biological Chemistry section of the Department of Chemistry, and the Biopsychology and Behavioral Neuroscience section of the Department of Psychology.

该学部主要单位包括三个系??细胞生物学和神经科学系,遗传学系,以及分子生物学和生物化学系;两个分部,化学系的生物化学部以及心?????的生物心理学和行为神经科学部。

The journal covers all aspects of the biology and control of insects and other arthropods of medical and veterinary importance, mainly including transmission dynamics, parasitology and immunology, behaviour, biosystematics, ecology and environmental, physical, chemical and biological control methods etc.

该杂志涵盖了生物学与昆虫控制以及其他具有医学与兽医学重要性的节肢动物的所有方面,内容主要涉及传输动力学、寄生虫学与免疫学、行为学、生物系统学、生态学以及环境,物理,化学与生物控制方法等等。

The journal dedicates to the studies in all aspects of the botany, mycology and phycology of the South Pacific, Australia, South America, southern Africa and Antarctica. Research areas include biosystematics and biogeography, ecology, physiology and biochemistry, genetics and reproductive biology, structure and development, ethnobotany, palaeobotany, bryology, lichenology and plant pathology etc.

该刊致力于南太平洋、澳大利亚、南美、南非以及南极洲的植物学、真菌学和藻类学各方面的研究,研究领域涉及生物系统学、生物地理学、生态学、生理学、生物化学、遗传学、生殖生物学、机构与发育、人类植物学、古植物学、苔藓学、地衣学以及植物病理学等等。

This new strategic reality may be understood as another form of the bipolarity of global powers seen during the Cold War.

新的战略现实可以被理解为冷战期间世界两极力量的另一种表现形式,世界现在不是被分割为两个超级大国所控制下的区域,而是被分割为相对稳定的、有秩序的、繁荣的、相互联系和相互依赖的区域--也就是主要在欧亚大陆的大部分地区、亚洲的东北和东南部以及北美地区的所谓全球化国家--和相对不稳定的、无秩序的、经济衰退的、国家之间较少相互联系或相互依赖的地区,包括亚洲的东南部一部分、南亚和中亚、中东的大部分地区,撒哈拉以南非洲,以及加勒比海和拉丁美洲的部分地区。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。