查询词典 Bosworth Field

In the downstream, a sudden expansion microchannel with asymmetric pairs of microelectrodes is designed. The multi-electrodes are formed beside the expansion microchannel and result in the trap of micro-particles. AC electric potentials are applied to each pair of asymmetric electrodes creating a non-uniform electric field. The tangential component of the field produces a force on the induced charges in the diffused double layer.

此外在扩张管道上采用一种可调控式的微粒子撷取装置，主要是在扩张管道的侧边镀上多对的电极，利用电极间电场所引起的局部的电渗流(Electro-Osmotic Flow， EOF)和轴向压力驱动流彼此间相反的运动方向，进而在管道壁面电极区间产生回流区。

The linear transient eddy current electromagnetic field problem for determining solution is characterized by replacing the interface condition of the tangential component of the electric field intensity by the interface condition of the normal component of the magnetic flux density, and ignoring the displacement current in the constraint equations.

谢莉 北京航空航天大学自动化科学与电气工程学院，北京 100083雷银照北京航空航天大学自动化科学与电气工程学院，北京 100083线性瞬态涡流电磁场定解问题的主要特点是边界条件使用磁感应强度的法向分量边界条件代替了电场强度的切向分量边界条件，约束方程中忽略了位移电流。

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

In chapter two, based on the property of uniform plane wave, field at boundary node is expressed with field in the computation region and expanded as Taylor's series. By truncating it at second order, a concise ABC is obtained.

首先，在第二章中，利用均匀平面波的特性，将边界节点上的场用计算区域内部的场表示，利用Taylor级数展开并截断到二阶，得出了一种形式十分简明的频域二阶吸收边界条件。

Results of estimation of effective parameters in heterogeneous show that: i Seff and Teff values evolve with time, as well as the principal directions of the transmissivity; ii Seff approaches the arithmetical mean of the field; iii Teff converges to its geometric mean at large time for the Gaussian random field we generated; and iv the averages of local T and S values within the cone of depression at early times differ from the Teff and Seff values.

研究结果在空间异质性孔隙介质有效参数的推估方法方面，显示利用传统抽水试验分析来估计有效参数时，从长时间的抽水试验分析所得的流通系数代表在抽水井有效半径内所有流通系数的某种平均值；此平均值与抽水井及观测井附近的地质有很大的关系，而且可能受到有效半径内地质异质性的影响，而储蓄系数的估计值变异很大与抽水井与观测井间地质的储蓄系数特性有关，特别是观测井的位置。

It solved production teledata transmission meets technical difficult problem and security problem. First had carried on the investigation and study and the classification to the oil field production teledata. Divided into three kinds the oil field production teledata.

首先对油田移动生产数据进行了调研和分类，把油田移动生产数据分为三类：1、油田内部地处偏僻的边远地区作业生产数据。2、油田施工队伍在国内其它探区作业生产数据。3、油田施工队伍在国外作业区生产数据。

Telluric field ; Variation characteristics ; Zhangbei earthquake ; ZD9A geoelectric-field instrument

张北地震；大地电场；变化特征； ZD9A地电场仪

The influence for velocity field and temperature field with the difference of height of return air is analysed.

分析了回风口高度对室内空气流动的速度场和温度场的影响。

The results show that the shape change in the zero points of aperture tangent electric field of some special elements influence the electrical performance of FSS tempestuously. This phenomenon is hard to explain by the laws of aperture tangent electric field distribution but has a close relationship to the mode of the currents distribution on the unit cell.

研究发现，部分单元的缝隙电场0点处的形状改变会显著影响FSS的频选特性，这一现象很难用缝隙电场的分布规律来分析，却可以用FSS层上表面电流反向模式来解释。

With the help of tensor analysis theory, the velocity field and the strain rate field during the tri-walled tube forming process are deduced, and the energy rate and the needed driving force are determined.

运用数学物理方法，遵循能量守恒定律对卷焊管电阻直热式钎焊过程进行了稳态分析，求得了焊接区上的温度分布及钎焊各工艺参数间的关系，并进一步探讨了钎焊温度波动控制策略及方法。

In other research, chondroitin is being investigated for use in several other conditions.

在其它研究，软骨素被调查用於几个其它情况。

They would make fun of him for having to work.

他们拿他的工作来开玩笑。