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Abstract: Using the ray-tracing method,we demonstrate that a grating-telescope stretcher is the conjugation of a grating pair compressor.We present an analytical formula for calculating the phase dispersions of the grating-telescope stretcher.The computer
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文摘:用光线追迹法论证了光栅-球面镜系统与普通的光栅对系统是一对相位共轭元件,并提出了光栅-球面镜系统色散的解析计算公式,以及对一个典型的放大系统做了模拟.模拟结果表明,对于一个放大系统,存在一个最佳的材料色散,用它可以获得最大的无色散带宽. |
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Abstract: Using the united method in this paper, the bending solution of the rectangular plate with one edge built-in and one or two corner point supported can be derived under arbitrary load.
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文摘:本文的统一解法可以解决悬臂板或带有角点支承时在任意荷截作用下的弯曲。 |
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Abstract: Various factors affecting the yield of packaging process of high speed switching diodes were analyzed on die structure and packaging process of devices, and steps have been taken to improve the yield of the dioldes.
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摘要:从器件的芯片结构及封焊工艺入手,分析了封焊工艺影响成品率的各种原因,并采取相应的改进措施,提高了器件的成品率。 |
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Abstract: Various measures for anti-interference for embedded control system are stated for enhancing the capability of the system.These include power supply, grounding, isolated input and output channels and circuit design.
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文摘:主要对嵌入式控制系统在抗干扰方面提出了各种措施,包括电源、接地、隔离输入、输出通道,以及在电路设计上采取了措施,以求提高系统的抗干扰能力。 |
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Abstract: Various parameters concerning water quality and atmosphere in environmental monitoring and control and the applications of sensors in this field is introduced.The fundamental principles of optic fibre sensors,thick film micro-sensors,biosensors,
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文摘:介绍了环境监控中水质和大气两个主要方面所涉及的参数及传感器在该领域中的应用,并简单的描述了光纤、厚膜微型电极、生物、电化学、光、半导体氧化物等六类传感器的基本原理。 |
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Abstract: Virtual instrument is the advanced technique in measurement field.It has typical development steps based on the hardware,software,bus structure etc.
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文摘:虚拟仪器是当今仪器仪表发展的趋势,根据硬件结构、总线结构、开发平台的不同,虚拟仪器系统有一套典型开发步骤和系统构建方式。 |
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Abstract: Virtual manufacturing (VM), the landmark of information era, is the all-sided innovation caused by modeling and simulation technologies in traditional manufacturing.
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文摘:虚拟制造是信息时代制造技术的重要标志,是建模与仿真技术对制造业的全方位改造。 |
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Abstract: Volcanic-type uranium deposits in China are mainly located in southeastern China with the predominant mono-uranium subtype in ore composition.
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文摘:中国火山岩型铀矿床主要产于东南沿海一带,其矿石物质成分以单铀类型为主,但也存在一些复杂类型的矿床。 |
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Abstract: Voyage to the West is a novel recording the history of Zheng He's seven trips to the western seas and his visits to more than 30 countries in the Yongle era.
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提要:《西洋记》以明朝永乐年间郑和七下西洋、通使30余国事为线索,以小说的形式记述了这段历史。 |
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Abstract: Wangjiang county is a large agricultural county in cotton, grain crop and oil production.
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文摘:望江县是一个以生产棉粮油为主的农业大县。 |
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Abstract: Water environment is a very important part of natural geographical environment, and its change is bound to influence the evolution of society and culture because human society depends on water.
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文摘:水环境作为自然地理环境的一个重要组成部分,其变迁影响到人类社会、文化的演变,对地域文化的形成和发展起着重要的作用。 |