查询词典 magnetic field

The results indicate that in the synchronizing condition the MRF is unyielded, every point of MRF in the flow field has the same angular velocity. Under the slipping condition, with the increase of magnetic field or the decrease of slip speed, MRF may transfer from whole yield to partial yield. When the MRF wholly yields, the angular velocity of MRF increases nonlinearly with its radius, the non-linear distribution becomes more obvious as the magnetic intensity in the working gap increases. When the MRF partially yields, the yield region expands with the decrease of magnetic intensity or the increase of slip speed and the unyield region always reaches the driven rotor. The transfer torque of MRTD increases with the increase of the external magnetic field, but the transfer torque maintains a constant value approximately with the variation of slip speed at the same magnetic intensity.

研究结果表明，在同步工况下，传动装置流场中磁流变液未屈服，各点角速度相同；在滑差工况下，随外加磁场的增大和滑差转速的减小，磁流变液逐渐从完全屈服向部分屈服转变；磁流变液完全屈服时，磁流变液角速度随半径呈非线性增加，工作间隙中磁场越强，流场的非线性分布越明显；磁流变液部分屈服时屈服区域随外加磁场的增大而减小，随滑差转速的增大而增大，未屈服区与主动转子相连；稳态下磁流变传动装置传递的转矩随外加磁场的增加而近似呈线性增大，但在相同外加磁场下，传递转矩基本不随滑差转速改变而改变，表现出良好的恒转矩特性。

The change and the distribution of magnetic field in magnetic core are described with system state equations of magnetic switch and Jiles-Atherton model so that whole operation of magnetic switch and its application circuit can be obtained, meanwhile total loss, eddy current loss and magnetic hysteresis loss of magnetic switch can be calculated.

利用磁开关的系统状态方程和Jiles-Atherton磁滞回线模型描述磁芯中磁场的变化和分布，从而得到磁开关及其应用电路的整体工作特性，同时计算出磁开关的总损耗、涡流损耗和磁滞损耗。

The finite element method has been used to analyze and calculate the space magnetic fields of wafer magnets and square magnets as well as sphere magnets. Vector magnetic potential, magnetic induction, magnetic force lines and magnetic induction isolines are obtained which provide theory basis for the application of magnetic field.

采用有限元法对磁疗中常用的圆片磁源、方片磁源、球形磁源的空间磁场进行了分析和计算，得到了上述磁源空间磁场的矢量磁位、磁感强度、磁力线和磁感强度等值线等参数，为磁源的使用提供了理论依据。

Together with the measured magnetic properties of magnetic films on the magnetic recording media, the variation of the magnetic recording signal in magnetic field was studied by MFM. The smallest perpendicular and parallel elimination magnetic fields were obtained.

通过测量磁记录介质的磁特性，以及介质同一小区上的记录信息随外加磁场的变化，得到了消除磁记录介质存储信息所需的最小平行消磁场和最小垂直消磁场。

In order to explore the effect on DNA synthesis and DNA double-strand breaks by magnetic field, We chose a relatively simple uniform magnetic field, study the affect on DNA synthesis and DNA double-strand breaks by such magnetic field, conclused that this impact related to magnetic field strength.

为了研究磁场对DNA的合成速度和DNA双链断裂的影响，我们选择比较简单的均匀磁场，从理论上探讨了此种磁场对DNA合成速度和DNA断链的影响，得到其合成速度改变和双链断裂程度与磁场强度大小有关。

The paper describes theory of beam noise reduction in adiabatically varying magnetic field, deduces the relation between magnetic field and noise , gives out fourth order Runge-Kutta formula of 2-order differential equation, simulates the effects of different magnetic field on electron motion, the results show good agreement with theory analysis,it confirms that adiabatically varying magnetic field near the cathode can reduce the beam noise.

文章描述了回旋波保护放大器电子束绝热降噪的机理，推导了噪声与磁场的关系和二阶微分方程的四阶精度龙格－库塔法求解电子运动方程的公式，编程计算了电子在不同磁场中的运动轨迹，模拟了不同磁场对电子运动的影响，模拟结果与理论分析相符合，证实了阴极表面附近的缓降磁场可以降低电子束的噪声。

According to modifying effect of magnetic field to resin, through modification of FRP pultrusion process and equipments, this dissertation developed FRP rebar magnetism curing pultrusion process, studied the effect of fabrication magnetic field intensity on mechanical performances of fabricated GFRP rebar, and confined the optimal intensity of curing magnetic field. Through durability contrast test of GFRP rebars fabricated with optimal curing magnetism intensity and without magnetic field in 80℃water, according to water-absorbing capacity and interlaminate shear strength, the effect of magnetism curing on the durability performance of GFRP rebar was studied.

根据磁场对树脂的改性作用，对FRP拉挤成型工艺设备进行改进，研究开发了FRP筋磁场固化拉挤工艺；研究了成型磁场强度对成型后GFRP筋力学性能的影响，确定了最佳磁场强度；对最佳磁场强度成型和无磁场成型GFRP筋进行80℃水中的耐久性对比试验，以吸水率和层间剪切强度为指标，研究了磁场固化工艺对GFRP筋耐久性的影响。

In the magnetic fluid magnetic particle even distribution does in the liquid does not have the rule the Brownian movement, after sur- is parallel to the optical transmission direction gradient magnetic field, as a result of the magnetic field and the magnetic particle mutual function, the optical transmission rate can have the remarkable change.

磁性液体中的磁性微粒均匀的分布于液体之中做无规则的布朗运动，当外加1个平行于光透射方向的梯度磁场后，由于磁场和磁性微粒的相互作用，光透射率会发生显著变化，同样加垂直光路的磁场也会影响其光透射率。

What is significant is that when magnetic fluids present saturation magnetization in magnetic field with uniform,and at the same time,gravity and magnetic forces counteracts in magnetic field with uniform gradient,the surface tension of magnetic fluids wil...

这一发现使我们在地面上能经济的、方便的、长时间的制造流体的小区域微重力环境，为研究微重力状态下的流体科学、生命科学，材料加工和器件开发等提供了新的方法。

Circular electric current is a classical physical model. The researches on the magnetic field distribution characteristics of the circular current are helpful for the further study on magnetic characteristics of magnetic dielectric. The ellipse electric current is a typical physical model of ring-like electric current. The researches on the magnetic field distribution of it make us obtain more understandings of magnetic problem of ring-like electric current.

圆电流是一个经典的物理模型，对圆电流磁场分布特性的研究有助于进一步研究磁介质的磁性特征；而椭圆形电流又是环形电流中一个典型的物理模型，对椭圆形电流磁场分布情况的研究，将让我们进一步认识环形电流的磁场问题。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。