Through the simulation analysis , the conclusions are reached that coupling of the system is enhanced with the enhancement of frequency and width of the input signal , and frequency ’ s influence on coupling is much more than width ’ s influence on coupling 通过仿真分析,指出系统耦合是随着输入信号的频率、幅值增大而增大的,并且频率对耦合的影响要大于幅值对耦合的影响。
We using a he - ne laser as light source , an optical tweezers with one optical trap was set up . the laser light and the observation light normally incident the objective back aperture . we can always observe and manipulate dielectric spheres at the top layers 在仪器研制方面，我们将he - ne激光器与显微镜系统耦合构建了一套显微镜物镜正置光镊系统，作为光镊光的激光从物镜上方竖直进入物镜目瞳，这样光镊光位于样品池的上方。
It is conclude that systematic coupling numerical model is an effective method to study the nuclide transport in vadose and saturate zones and can offer scientific evidence and technique guide for the safe disposition of nuclide waste and environmental assessment 采用系统耦合数学模型来研究核素在包气带和含水层中的运移是预测核素污染的重要手段和有效方法，可为核素在地下处置库中安全处置及环境影响的评价提供科学依据和技术指导。
Based on it , a new kind of helix slow - wave structure named elliptical helix slow - wave structure used in helix traveling wave tubes has been detailedly investigated . by studying the rf characteristics of this slow - wave structure , it ’ s found that higher operation frequency and interaction impedance will be obtained by increasing the eccentricity of helix or decreasing it of the shield . meanwhile , great potential of improving system bandwidth has also been found if the eccentricity of helix or shield or the two are properly choosed 本文对近几十年大功率行波管的研究进展进行了简单讨论,并在此基础上研究了一种可应用于螺旋线行波管的新型的螺旋线慢波结构,即椭圆螺旋线慢波结构,通过对该螺旋线高频特性进行详细分析,我们初步认为,选择适当的螺旋线和屏蔽筒离心率,可以提高系统工作频率,增加系统耦合阻抗,并且具有改善系统带宽的潜力。
The radical reason of lower ecosystem productivity and disharmonic developing in this ecotone is the improper configuration inner animal husbandry for example of ansai county and big animal scale exceeding the threshold of the primary productivity for example of wuchuan county , which above - mentioned leads to the fact that coupling mechanism between agriculture and animal husbandry system has not been established , and agriculture and animal husbandry is still in the state of disharmonic on the whole . 3 主要表现为两种典型结构模式，一种以安塞县为代表，农牧能值总体利用率较高，但畜牧业内部结构偏重食粮动物使得高质能转化率低下；另一种以武川县为代表，农牧业结构总体上朝趋于协调方向发展，但畜牧业规模过大，由于草畜平衡严重失调，导致农牧系统耦合机制难以稳定。
To overcome the limitation of the conventional multi - rigid system dynamics in modeling vehicle / track systems and calculating their interaction , and to truly present the interaction and intereffect vehicle / track systems , vehicle / track coupling system model is built by using femb pre / post process code in this paper 然而，有限元法在机车车辆轨道系统耦合动力学中的应用仍处于起步阶段。为了克服传统多刚体系统动力学研究方法在建模及计算方面的局限性，比较真实地反映车辆轨道系统的相互作用和相互影响。
The matching mechanism of gross , structure , abilities and mobility , which form the matching structure of the system , between the hr development and economy is analyzed . the article develops four indexes including the hr contribution rate in the economy growth , industrial structure dislocation index , hr ability and hr mobility to value the fitting degree , which may promotes the focalization largely of area ' s hr development . less developed region ' s economy development comes to be an important project in the new century in china 人力资源与经济发展在总量、结构、能力、流动性四个方面的耦合共同构成系统的耦合结构，本文对这些耦合的机制进行了分析，指出每一种耦合状态的决定因素，并尝试性地开发人力资源与经济发展系统耦合水平的评价方法，分别用人力资源在经济增长中的贡献率、产业结构错位指数、区域人力资源能力评价模型及流动性指标来评价特定区域人力资源与经济发展系统的总量、结构、能力与流动性耦合。
Taking zhijin county as a concrete case , the article calculated emergy of local ecological and economic system qualitatively and quantitatively against data in the year of 2003 with theory of ecological economics and system coupling under which material flow , energy flow and information flow could be manifested actually , and then analyzed the ecological and economic system coupling status in the year of 2003 with emergy indexes and emergy index model for sustainable development 本文利用2003年数据,驾驭生态经济学和系统耦合的理论,以织金县为例,运用能准确地研究生态经济系统的物质流、能量流和信息流的分析方法? ?能值分析法,定量定性结合,计算织金县生态系统和经济系统能值,然后利用相关耦合指标和能值可持续发展指数模型分析2003年织金县生态经济系统耦合现状。
Furthermore , the exergy analysis considered both the physical exergy and the chemical exergy were used to analyse the chemical synthesis and the power generation . the results when methanol synthesis ratio was 0 . 9 to the equilibrium state were compared with the separate electrical and chemical systems and showed that polygeneration was 3 . 5 % more efficient and less polluted 由于多联产系统耦合了化工和发电的过程，本文在采用火用分析的方法时，分别考虑了物理火用和化学火用，计算结果将联产和分产进行了比较，得出在甲醇合成产率达到0 . 9时，联产效率较分产高3 . 5 % 。
Sustainable development requires all the society realize sustainable development . as a basic demand to the society , water resources is very important and it must realize sustainable utilization . the dissertion argues that more consideration should taken on the society based on ecology - economy systenrecology - economy system is actually a higher - leveled and more complicated super system which is combined by ecologic system and social economic system . the dissertion elaborates the characteristic , structure , function and three basic conceptions about ecology - economy system . from ecology - economy system , the dissertion expounds implication of water resources sustainable utilization , then puts forward physical , social and technical condition of water resources sustainable utilization . the dissertion also considers that water resources sustainable utilization has characteristic of integrity , harmony , impartiality and optimumthe dissertion proposes the foundmental model of water resources sustainable utilization , that is , in the vie w of development of structural optimum 生态经济系统实际上是生态和社会经济两个系统耦合而成的一个更高层次更为复杂的大系统。本文阐述了生态经济系统的特征、结构、功能以及认识它所需采取的三个基本观念。从生态经济系统的角度，本文阐述了水资源持续利用的涵义，然后提出了水资源持续利用的自然、社会和技术条件，并认为，水资源持续利用具有整体性、协调性、公平性和最优性的特点，最后阐述了水资源持续利用的基本模式：结构优化演变控制。
