效率
- 与 效率 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Economic Ethnics should combine the "harmoniousness"on the base of "courtesy"...
经济伦理要将伦理精神上的"礼"节之"和"与经济上的效率结合起来,做到伦理讲效率,经济讲正义。
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According to the studied results at present, the studied objects are mainly thin plate and beam about sound radiation mode, a method computed sound radiation mode of complex structure is presented in this dissertation, according to the results of the previous two chapter, a theoretical method to solve acoustical radiation mode and acoustical radiation efficiency of complex structure by boundary element method and acoustical radiation theory is posed, the acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regard to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results. According to results of the form three chapter, the structure sound radiation sensitivity is studied in detail, the sound radiation power of structure can be expressed as positive Hermitian quadratic form, the sound radiation sensitivity can be expressed as two parts by partial differential with respect to design variable, which are sensitivity of boundary velocity and impedance matrix, combined with the theory of FEM and BEM, the structure sound radiation can be translated to the analysis of structure dynamic sensitivity and impedance matrix sensitivity. The theory posted in this dissertation is tested by the FEM software ANSYS and the software AAS programmed by author.
在前几章的基础上,通过结构声辐射的模态理论对结构的声辐射的机理进行了深入地探讨,针对目前声辐射模态的研究对象主要是简单的板和梁类结构,提出了一种计算复杂结构声辐射模态的方法,利用前两章研究所得的结论,将边界元方法与广义特征值的理论结合起来研究了复杂结构的声辐射模态与声辐射效率,先将结构的声辐射功率表示为一个正定的厄米特二(来源:ABb7C论文0909网www.abclunwen.com)次型,运用广义特征值分解求解了复杂结构的声辐射模态,然后利用声辐射模态关于阻抗矩阵与均方速度耦合矩阵的正交性,求解了复杂结构的声辐射效率,最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。
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Is one of the earliest professional development and production of electric vehicle speed controller of the private scientific and technological enterprises, the company has a strong professional design and production capacity, products have been a number of brands for the domestic electric vehicles matching efficiency and performance are better than ordinary products, annual production capacity of 200,000 sets, the company has brush controller, using pwm control, high efficiency, with over-current, current limiting, undervoltage,"speed" a wide range of protection features Special high-power brush has controller using the latest electric vehicles for the use of high-life relays and intelligent anti-Speed circuit.
溧阳爱斯特自控器材科技开发有限公司是国内最早专业开发生产电动车调速控制器的民营科技企业,公司具有较强的专业设计及生产能力,产品已为国内诸多品牌电动车配套,其效率及性能均优于一般产品,年生产能力二十万套,本公司生产的有刷控制器,采用pwm 控制,效率高,具有过流、限流、欠压、"飞车"多种保护功能,特别大功率有刷控制器采用最新专供电动车使用高寿命的继电器及智能防飞车电路。
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This measuring system displays some remarkable merits, such as synthesis,automatization,intergration,continuity and on-line and is further able to improve the efficiency of testing,reliability and accuracy of testing data, results, solving the shortcomings of traditional test methods,such as scattered, low efficiency and high-test errors.
该系统具有综合、自动、集成、连续、在线的突出优点,大大提高测试效率、测试数据和结果的可靠性、准确性,解决了传统测试方法的分散、效率低和测试误差大的缺点。
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The test results show that it could improve sorbent mixture and calcine in furnace and enhance sulfur removal without effect on boiler operation to adopt vortex combustion. High sulfur capture can be gotten under relative low Ca/S ratio throuth humification by venturi wet dust collector.
测试结果表明,引入四角旋涡技术可以在不影响锅炉运行的情况下明显改善脱硫剂在炉膛内的混合煅烧,有利于提高炉内脱硫效率;利用文丘里水喷嘴和除尘器,可以在较低Ca/S下实现较高脱硫效率。
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Using system analytical method, a mathematical model for evaluating the efficiency of gas-distribution piping system was established, and the illation was made about efficiency of it in the realm of evaluation.
利用系统分析方法,建立了评价配气管网系统效率的数学模型,并延伸出评价区域配气管网效率的数学模型。
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In the same time, this paper measures the production functions of each industry, the result is the industries capital efficiency low, the margin efficiency of capital is low, especially attach little importance to the immateriality capital.
同时本文还利用截面数据度量了股票市场各个行业的生产函数,认为我国股票市场的行业资源利用效率低下,资本的边际效率水平不高,尤其对于无形资产不够重视。
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Allocation scale and structure of public finance is the key for the equilibrium and balance between efficiency and justice, for that immoderate justice allocation will affect efficiency.
但公平与效率之间有个转化和平衡关系,过度的分配公平会损害财富创造的效率,所以,公共财政分配应该有一个适度的规模和合理的结构,既要满足广大社会成员的基本生活保障,又不能削弱社会成员工作和创造财富的积极性。
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However,there are a lot of problems unsettled by now in this field,such as the low efficiency of splicing in heterologous hosts,the low yield of intein mediated purification system and the impracticability of artificial control on the process of splicing.
但是,在目前的研究中,仍然存在着大量未解决的问题,如异源生物体内剪接效率低、蛋白质内含子纯化系统效率低以及不能实现蛋白质剪接人为控制等。
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On the other aspect, we provide inefficient DMUs in each group with improvable directions by the method of slack variable analysis.
对於各群无效率的DMU,我们也使用差额变数分析,指引各无效率的DMU改善的方向。
- 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