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Densities and viscosities of the binary mixture of ethyl crotonate with ethanol at different compositions were determined at the temperature range from 293.15K to 343.15K and under atmospheric pressure by using a vibrating U-shaped tube densimeter and Ubbelohde suspended-level viscometer.
在常压下采用U形振动管密度计测定了巴豆酸乙酯与乙醇的混合液在293.15~343.15K下的密度。
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Die to the vertical dynamic characteristic is connected with the initial position and deformation of the mesh pads,so vibration performance under different operating condition is analyzed dentally.
由于减振器垂直方向动态特性与下网块的初始位置及变形有关,因而详细分析了减振器在几种不同工况下的振动特性。
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CuS and CdS nano-particulate films were obtained with these two methods, and some interesting phenomena were observed: under the Gibbs film formed by CTAB, CuS nano-rods were obtained at the oil/water interface, and disklike aggregates of CdS nano-crystals were obtained at both the air/water and oil/water interfaces; under the Langmuir film formed by NaAOT at air/water interface, disk-like aggregates of CdS were also obtained.
利用此两种反应技术,制备了CuS和CdS颗粒膜,并研究了它们的一些光电性质;在Gibbs膜下,得到了棒状CuS纳米晶。由发现的表面活性剂形成的带状物,提出棒状CuS晶体是以带状聚集体为模板形成的;在液-液、气-液界面Gibbs膜下反应中,发现CdS纳米颗粒的盘状聚集体的形成,这是由于表面活性剂在界面上形成的二维胶束而造成的;在气-液界面上Langmuir下的反应中,也发现CdS盘状晶体的生成。
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This text regard CPLD as the foundation, making use of the language of VHDL, designing in the electronics the help of the automation tool descend to design with the large-scale and programmable logic machine piece( FPGA/ CPLD) a direct current motive keeps a the crest adjusts downcastly soon with measure the system, with a control power supply.
本文以CPLD为基础,利用VHDL语言,在电子设计自动化工具的帮助下用大规模可编程逻辑器件设计了一个直流电动机直顶向下的调速和测量系统,和一个控制电源。
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The paper analyzes the soil water dynamics and water requirement law of alfalfa,feed maize and ensile maize under 3 kinds of water-saving irrigation conditions through experimental study on the crops.
对节水灌溉条件下的紫花苜蓿、饲料玉米和青贮玉米需水量进行了试验研究,分析了不同灌溉水平下3种饲草料作物的土壤水动态和需水规律。
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In cards and membership cards make not only to measure filmogen of frictioncoefficient at room temperature, but also research in the field of frictioncoefficient at ambient temperatures.
在制卡和会员卡制作后不仅给丈量薄膜质料在常温下的摩擦系数,还答查究在本质搁置境况温度下的摩擦系数。
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According to the characteristics of the cold insulation box of Fractionating tower, it is considered that the effect of inner-filling on the construction is related with the variable density, then the relative formulation in the condition of n...
根据分馏塔保冷箱的特点,认为内填料对结构的作用与变密度有关,推导了无水平位移下的相关公式;对此结构在有水平位移下内填料的发育进行仿真分析,并将内填料的作用与结构的楼层柱的旋转角建立联系;最后根据得到的结论对分馏塔保冷箱在风与内填料作用下进行了非线性分析,得到结构的极限承载力。
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Being different from the unique vein pattern under quasistatic compress, adiabaticshear fracture occurs at high stress rate in dynamic compressive test. In addition to the veinpatterns in the fractural surface, some melting area is also observed.
与准静态压缩条件下的均匀脉络纹断口形貌不同,在高应变率下发生绝热剪切破坏,在含有部分脉络纹断口中,还出现了绝热引起的熔化区。
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Ant routing use Swarm-Intelligence for route discovery and also have multi-paths for backup and balance. However, the efficiency of ant routing can more and more go down in large-scale mobile ad hoc networks. For solving such condition, improving the efficiency of ant routing, this research proposes the algorithm that combines both the GRID and ant routing, called grid-based ant routing algorithm. GARA can improve efficiency of ant routing in large-scale mobile ad hoc networks.
对於解决路由上的一些问题,也因此有各种不同类别的路由方法被探讨,蚂蚁路由演算法利用群体智慧(swarm-intelligence)找寻路径,而且同时能够找到多条备援路径,但是,蚂蚁路由演算法会因为行动主机数目愈来愈多情况下,而导致路由演算法效率降低,因此本论文以GRID为概念,融入蚂蚁演算法中,让蚂蚁是采用网格对网格(grid-by-grid)方式传输,改善蚂蚁路由演算法在行动主机数目愈来愈多情况下的效率与效能。
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By the numerical analysis of the ultimate bearing capacity of two- and three-dimensional footing under combined loading mode, the results show that the effect of alteration of underground water lever on bearing capacity of three-dimensional foundation is more than on that of two-dimensional foundation, the effect of soil gravity on bearing capacity of three-dimensional foundation is more than that of two-dimensional foundation. At the same time, the numerical calculation process of ABAQUS indicates that whether the geostatic stress is balanced or not has great effect on the numerical convergence. In view of the effect extent of dilation angle of soil on the ultimate bearing capacity and the failure pattern of foundation, the condition of two-dimensional plane strain is higher than that of the three-dimensional foundation.
复合加载模式下,通过对三维矩形基础和二维条形基础进行数值分析,结果表明:黏性土地基中地下水位的变化,对三维矩形基础极限承载力的影响程度高于对二维条形基础的影响;在求解地基极限承载力的过程中,土体重度对三维矩形基础的影响明显高于对二维条形基础的影响,同时ABAQUS数值计算过程表明,地基土体地应力能否合理平衡,对数值求解过程中是否收敛有很大的影响;就土体剪胀角对地基极限承载力的影响程度而言,二维平面应变情况下土体剪胀角对极限承载力的影响比三维情况下的影响更明显,即土体剪胀角对条形基础极限承载力的影响高于三维矩形基础。
- 推荐网络例句
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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。
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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。
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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。