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Using a set of better seeds, we can get a better set of initial electoral districts through the help of centroidal Voronoi diagram. Then, we adjust the population in every district followed by reducing the partitioning number of each county.
我们首先从挑选较佳之起始点,透过质心范诺图的观念划分出形状较完整之初始选区,然后修正各选区之人口至合理的误差范围内,再进行乡镇市层级行政区分割数之修正,以避免该层级行政区被过渡分割。
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In order to analyze the airborne LiDAR data corresponding to single trees and stand heights in the forestry area, we set up samples to measure tree heights of Alnus formosana, Cryptomeria japonica, and Chamaecyparis formosensis in the Alishan area. We build the Canopy Height Model based on the data from the airborne laser scanning system. Single Tree heights were estimated by averaging the CHM values within a 0.5m radius, and six different sizes of sample stands (5×5, 10×10, 12.5×12.5, 15×15, 17.5×17.5, and 20×20) were set up to extract the average heights within the area as the calculated value.
本研究於阿里山地区设置样区,针对台湾赤杨、柳杉、红桧等树种进行立木树高之量测,配合该样区之空载光达影像资料,建立树冠高度模型(Canopy height model, CHM),探讨空载LiDAR在森林地区对於单木树高与林分高的量测情形;单株立木高系以样区立木位置为中心,萃取0.5 m 圆形环框范围内之CHM平均值为其推估值;光达林分高则以6种林分面积(5 m×5 m、10 m×10 m、12.5 m×12.5 m、15 m×15 m、17.5 m×17.5 m、20 m×20 m)萃取范围内之CHM平均值为其推估值。
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Methods The model of SAH was set up by injecting blood two times via cisternal after occlusion of bilateral carotid in rabbit. The food-intake and behavior of experimental animals were under observation at various stages of experiment. The content of ET in blood and CSF was tested by radioimmunoassay, and the NOx- by HNO3 redutase method. Regional cerebral blood flow was measured by hydrogen clearance method.
方法采用双侧颈动脉结扎和枕大池二次注血制成兔SAH模型,观察SAH前后动物进食量和神经功能改变,用放射免疫方法和硝酸还原酶法分别测定血液和脑脊液中ET和NOx-含量,以氢清除法测定局部脑血流量。
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It introduces a kind of novel loading test system, based on the operation principle of damper. this loading system is operated by the driving motor. it realizes the loading, in that the damper has a negative drive force that puts on the motor. Based on the ordinary electromagnetic damper, the thesis presents a novel hybrid excitation electromagnetic damper which has adjustable work characteristic, analyses the working principle and structural feature of the electromagnetic damper, deduces the formulas to calculate the eddy current density through the Electromagnetic theory, analyses the distribution of the eddy current in the cotyloid rotor, and also studies the method of calculating the damp torque, establishes the mathematical model of the electromagnetic damper, analyses the relationship between the electromagnetic damper structural parameter and damp torque, researches the engineering design and analysis method of the electromagnetic damper, provides theory foundation for the design and analysis of the electromagnetic damper, contrives a hybrid excitation electromagnetic damper that satisfies the target request, designs a set of compound excitation electromagnetic damping loading control system whose control core is AT89C51 monolithic integrated circuit, analyses the electric circuit part, and carries on the experimental test to this set of electric circuits. Finally it debugs this electromagnetic damping loading system, this system satisfies the target request proposed.
论文提出了一个全新的加载测试系统种类,该加载系统是在阻尼器工作原理基础上,利用电动机拖动阻尼器运转,从而阻尼器产生一个与运动方向相反的阻尼力矩,该力矩作用在电动机上实现对电动机加载测试;同时,论文在一般电磁阻尼器基础上提出了一种新型的可调式复合励磁电磁阻尼器结构,该种阻尼器的工作特性在一定范围内可进行调节;论文分析了电磁阻尼器的工作原理和结构特点,运用电磁场理论分析推导了电磁阻尼器的涡电流密度公式,分析了涡电流在转子杯内的分布图,并对阻尼力矩计算方法进行了研究,建立了电磁阻尼器的数学模型,分析了电磁阻尼器结构参数和阻尼力矩之间的关系,对电磁阻尼器的设计和分析方法进行了研究,为电磁阻尼器的工程设计建立了理论基础;设计了满足技术指标要求的复合励磁电磁阻尼器和一套以AT89C51单片机为控制核心的复合励磁电磁阻尼加载控制系统,对该控制系统硬件电路各部分进行了分析和设计,对软件进行了设计,并对控制电路进行了试验调试,该系统满足所提出的加载指标要求。
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In this paper, a long divinable time evaluation and a short time prediction of some vibration signals of a turbine generator set is processed by the largest Lyapunov exponent mode. And the results show that the method is certainly accurate and reliable to predict future state of a turbine generator set. As a matter of fact, the method can be used to prediction to future running state of any other complex mechanical equipment.
运用最大Lyapunov指数预测模式对发电机组振动信号进行了最长可预测时间估计和短期预测研究,结果证明基于最大Lyapunov指数的预测模式在进行发电机组时序信号预测中具有良好的预测精度和可信度。
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On the basis of analyzing and evaluating civil product industry status quo,using fezzy set, the paper analyzes and determinds that RYR Institute shold take high-tech product ,self-control technology ,detecting technology electronic device for automobile ,as well as military initiating technology as prop industry of its civil product competition in order to provide plunge point for the development of its civil product industry .Then ,it analyzes the key competitive force of the civil product corperation of the institute ,set up C2R and C2GS2 models used in technical progress DEA analysis ,fmds the relation between scale benefit .and production administration .Through the analyzing of competitive core force ,it indicates that the cause resulting in low benefit of military enterprises is stagnancy of human resource exploitation .The key for the realization of advance by leaps and bounds of civil product work of RYR Institute is personnel excitation mechanism.
论文在对民品产业现状分析与评价的基础上,应用模糊聚类法分析并确定了以高技术产品、自控技术、探测技术、汽车电器及军工传爆技术作为RYR所民品竞争的支柱产业,为RYR所民品产业的发展提供切入点,在此基础上分析了RYR所民品公司的核心竞争力,建立了技术进步DEA分析的C~2R模型和C~2GS~2模型,找出了RYR所规模效益与生产组织管理方面的关系,通过对核心竞争力的分析,挑明了军工企业效益低下的主要原因是人力资源开发滞后,要实现RYR所民品工作的突飞猛进,建立有效的人才激励机制是关键。
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In the dehydrogenation process of HD process, the temperature set at 580℃ and pressure set at 100Pa is a perfect parameter, it can make the magnet to have high magnetic performance. In the HDDR process experiment, the paper contrast four HDDR process such as C-HDDR V-HDDR V-HD-S-DR and d-HDDR by the anisotropy and magnetic performance of ternary NdFeB magnetic material. The results show that adjusting the parameter of the d-HDDR process can make the anisotropy and magnetic performance of ternary NdFeB magnetic powders to catch up with the hexahydric NdFeBCoZrGa magnetic powders. At the end the paper discusses the betterment of the equipment which produces ternary NdFeB magnetic with the d-HDDR process.
和580℃的脱氢温度相搭配的脱氢气压选择在100Pa左右是理想的工艺参数,这样的搭配使得最终烧结磁体综合磁性能优异;在HDDR制粉工艺实验中,本文对比了C-HDDR、V-HDDR、V-HD-S-DR和d-HDDR四种HDDR工艺对于三元NdFeB合金各向异性和磁性能的影响,得出结论:通过发展d-HDDR工艺,调整工艺参数和控制水平,可以使三元NdFeB合金磁粉的性能达到或接近六元NdFeBCoZrGa合金磁粉的水平,在文章末尾,还对配合使用d-HDDR工艺设备的改造进行了分析。
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The clamp device comprises the grip part connected with the clamp part through the linking part, with the clamp part composed of concave part and the first and second arms extended to both sides, the first concave slot horizontally going through the first arm, the second concave slot horizontally through the second arm, a U shape tunnel parallel with the horizontal surface formed by two arms and with the concave part, cylinder hole set inside the top and down side all symmetrical inside the second deep slot, rotary shaft with both ends insertable to the cylinder hole, linking pole component fixed on the rotary shaft, limit component set on the first arm locking the linking pole.
本发明提供一种夹取装置,该装置包括:握持部,夹取部通过连接部与握持部连接;夹取部包括:凹形部,及由其两侧延伸的第一臂和第二臂,构成容置空间;第一凹槽,水平穿设于所述的第一臂,第二凹槽水平穿设于所述的第二臂,分别平行于凹形部及所述两个臂构成的平面,形成U形通道;圆柱形孔,对称设置于第二深槽的上下侧壁内;转动轴,两端可插入所述圆柱形孔中转动;连杆组件,固定于转动轴上;限位件,设置在第一臂上,用于锁定连杆。
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The supporting technologies of network information security are summarized. The unitive authentication systems existing are analyzed in this paper; their virtues and shortcomings are discussed.2. About the distributed peculiarities of allied resource, the concept of alliance grid is established. The access control model of alliance grid is established by directive ideas of access control security of alliance grid. AG-RBAC model is set up in the basic of common RBAC, interbedded relations between roles are set forth.
针对制造联盟企业资源分布式的特点,提出了联盟网格的概念;根据联盟网格安全访问控制的指导思想,提出了联盟网格访问控制模型;在一般RBAC模型的基础上提出了基于角色的联盟网格访问控制模型,清晰的表述了角色之间的层次关系;初步分析了AG-RBAC的实现模式,重点讨论了角色定义和权限配置的实现方法。
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The chemical analysis of N, P and K in organic fertilizer is presented: sample is decomposed by sulfuric acid-hydrogen peroxide and prepared to be a solution. N can be determined by NC-2 model quick N analysis set, P by chinoline molybdic acid method and K by tetraphenylboron potassium, needless of spectral photometer and flame photometer, the method is available when the content of N, P or K is over 0.1% with desired accuracy and precision.
介绍用化学分析方法测定有机肥料氮、磷、钾的含量,即样品经硫酸-过氧化氢消化后,制备待测溶液,分取待测溶液用NC-2型快速定氮仪测定氮,用磷钼酸喹啉重量法测定磷,用四苯硼酸钾重量法测定钾,不需使用分光光度计和火焰光度计,适宜一般复混肥料厂采用,对含氮、磷、钾分别达0.1%以上的样品均可用本法测定,方法的准确度和精密度能满足生产的要求。
- 相关中文对照歌词
- Set By Example
- 推荐网络例句
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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。
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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。
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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.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力