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field field
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     The research and manufucture for a saddle superconducting magnet used in,MHD generation have been of the magnet introduced in this paper,The main parameters are,inner diameter of the winding 690mm,outer diameter 1210mm,length 1700mm,central field field 4T (I = 873A),stored energy 7.62MJ.
     本文介绍一个圆鞍型二极超导磁体的制造工艺. 磁体主要参数是:线圈内径φ690mm,外径φ1210mm,长1700mm,中心磁场4T(I=873A),储能7.62MJ。
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     There are many advantages of the ective control technique of vibration such as high efficiency of oscillationreduction, wide frequency range of effective oscillation reduction and quick reaction etc, which possesses broad applicationprospect in mechanical vibration engineering field field.
     振动主动控制技术具有减振效率高、有效减振频率范围宽、反应敏捷等优点,在机械振动工程领域具有广泛的应用前景。
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     By using this method, the following results are obtained: velocity field, field of strain-rate, stress field, the back and front boundaries of plastic zone, the position of neuture point on the contact arc, and the rolling pressure acting on the contact surface of the strip.
     用这一方法求得了速度场、应力场、塑性区前后边界,接触弧上中性点的位置和轧制单位压力,并与工程方法的计算结果作了比较。
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     Multiphoton Interaction of Two Atoms with a Two Mode Quantum Cavity Field: Field and Atomic Dynamics
     两个原子与双模腔场的多光子相互作用:场和原子的动力学性质
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     Finally, according to the actuality of agricultural development of Boxing county and requests of eco-agricultural construction and position of agricultural development, it makes a prediction on the changeof the agricultural structure of Boxing county, and on the basis it estimates the economic benefit of popularizing the eco-agricultural models in the grain field, cotton field, field of vegetables, fish production area roughly, and then comments to ecological benefit and social benefit that the eco-agricuitural models are popularized generally.
     最后,根据博兴县农业发展的现状、生态农业建设的要求和农业发展的形势,对博兴县农业结构的变化做出预测,以此为基础,对粮田、棉田、菜田、渔业生产区推广生态农业模式的经济效益进行粗略估计,然后总体上对生态农业模式推广的生态效益和社会效益加以评述。
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  field field
This then permits a dynamic theory of the gravitational field (field equations, energy characteristics) to be constructed in Maxwellian form.
      
Both approaches use the DRAINMOD and the DRAINMOD-N models to simulate the hydrology and the nitrogen balance of the land phase at the scale of a field/field block/sub-catchment.
      
A third set of nine plots were established in a second field (Field 2), which had been abandoned 5?years earlier.
      
In one field (Field 1), eighteen plots (measuring 100 m2) were established.
      
They were planted in the field (Field Test-II stage) in December, 1971 and examined for morphology, sugar content and chromosome number in the summer of 1972 and thereafter.
      
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A new method of measuring temperture distributions in the cutting region isgiven in this paper.A thin wire of constantan (diameter 0.07 mm) is welded tothe side of a Workpiece as a thermo-couple.With orthogonal cutting the tool passedbeneath the wire,so that the wire passed up the tool facc still welded to the chip.The tool passed over the wire and passed beneath the wire,the wire-work thermo-couple would be possible to give the temperature field throughout the chip and thework.In this paper evaluated the experimental...

A new method of measuring temperture distributions in the cutting region isgiven in this paper.A thin wire of constantan (diameter 0.07 mm) is welded tothe side of a Workpiece as a thermo-couple.With orthogonal cutting the tool passedbeneath the wire,so that the wire passed up the tool facc still welded to the chip.The tool passed over the wire and passed beneath the wire,the wire-work thermo-couple would be possible to give the temperature field throughout the chip and thework.In this paper evaluated the experimental methods used foreigners the imbe-dded thermorcouple method,the infrared photograph method,the infra-red radio-metric microscope method.Compared With all these methods,our new experimentalmethod of measuring cutting temperature field gives better result.The temperature field field in cutting region measured our experiment givesinteresting result:1)the isotherms in the perimary deformation zone is near theshear plane;2) the maximum temperature in chip takes place at the point wherethe chip leaves the face of the tool;3) the maximum temperature in the work-piecetakes place at the point where the cutting surface leaves the tool.

本文提出在试件端面点焊康铜丝的半人工热电偶法测量切削区温度场分布的新实验方法。这方法较过去国外用的埋入热电偶法、红外照相法、红外点温度计法测量切削区温度场,可以得到更符合真实切削情况的测量结果。实验得到的直角自由切削时的切削区温度分布图中,剪切区等温线和滑移线相近,切屑中最高温度在切屑与前刀面将分离处,加工表面最高温度在它与后刀面分离处,这些结果证明现在的切削热分布理论是正确的。

In this paper a new method for semiconductor device simulation—thegraph—theoretic field model method of semiconductor devices is presented.The fea-ture of the method is that the field in a device is discretd first,then a discret modelof the fieldfield graph which can be analyzed through circuit theory is formed.Thecomputing results by using this method approximate those in the papers reported.

本文提出半导体器件模拟的一种新方法-半导体器件的场图论模型分析法.它的特点是:先将器件中的场离散化,形成场的离散模型-场图,对场图可引用电路理论进行分析.用这种方法计算实例的结果与已有文献相近.

As the first stcp in iterativc approach to mass transfer ability problem in multiphasc fluid flow with unstcady initial valuc and dcformablc boundary, the corrcsponding statcs cquation was cstablishcd in tcrms of scparablc variablcs to scek for the corrclation function П=F(Q_(so), Q_o, Si, J) here, Q_(so) being the disehargc ratc of suspcndcd solids, Q_o the discharg rate of mixed liquid, S_i the concentration of suspendcd solids in mixed liquid, J the hydraulic slope in the reach between inlet and outlet of...

As the first stcp in iterativc approach to mass transfer ability problem in multiphasc fluid flow with unstcady initial valuc and dcformablc boundary, the corrcsponding statcs cquation was cstablishcd in tcrms of scparablc variablcs to scek for the corrclation function П=F(Q_(so), Q_o, Si, J) here, Q_(so) being the disehargc ratc of suspcndcd solids, Q_o the discharg rate of mixed liquid, S_i the concentration of suspendcd solids in mixed liquid, J the hydraulic slope in the reach between inlet and outlet of flow. The coincidence of extremum domain of 11 and that of InП in multi-dimension space was verified, then Q_(so)∝Q_o~(1.46) S_i~(0.712) J~(1.26) for flat bed reservoir, Q_(so)∝_o~(1.22) S_i~(0.83) J~(1.54) for deep channel reservoir, have been obtained respectively. Data of field field observations and laboratory experiments have been cited for comparison. The transfer function of large scale water flow with respect to suspended solids was deduced finally.

为了解决初值不恒定,边界可变形的多相流传质问题,本文首先建立了便于分离变量的对比态方程作为迭代逼近的第一步以寻求输沙能力Q_(s0)与排水流量Q_0,进水含沙量S_i和水力比降J之间的相关函数П。继而论证了幂函数П的极值所在域与对数函数InП的极值所在域在Q_(s0),Q_0,S_i和J多维空间中的重合问题。从而通过矩阵运算求得在单一断面滞洪水库(漫流冲淤)条件下,Q_(s0)∞Q_0~(1.46)S_i~(0.712)J~(1.26)。在复式断面(高滩深槽运用水库)条件下,Q_(s0)∞Q_0~(0.83)J~(1.54)。文中列举了国内外实测结果以资比较验证。最后导出传递函数以便推广应用。

 
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