查询词典 levitation

In the experimental research, the levitation force of a HTS above a permanent magnetic guideway was first investigated in the case of zero-field cooling. The hysteresis of the levitation force curve and the interaction between a HTS and the applied magnetic field were explained by the Bean model, and the effect of the measuring precess on the levitation force was further analyzed.

实验研究中，首先研究了零场冷条件下高温超导体在永磁导轨上方的悬浮力特性，借助于Bean模型分析了悬浮力曲线的磁滞特性，阐述了高温超导体与外磁场间的相互作用原理，在此基础上进一步分析了悬浮力测试过程对悬浮力测试结果的影响。

Based on the foundation of the virtual prototype model of the medium-speed maglev train, using the mechanical dynamics and kinematics analysis software ADAMS, this paper expatiates on the following things. Firstly, it analyses the decouple of single magnetic bogie by the simulation and experimentation; secondly, adds the magnetic levitation control system to the single magnetic bogie model and simulates; thirdly, by simulating the motion of the train running on the different type of guideway, analyses the state of the train on the ramp and crankle;in the end ,this paper does a further research on how the magnetic levitation control system and guideway parameters affect the suspending gap when the train runs on the ramp and crankle .

论文在建立了中低速磁浮列车虚拟样机模型的基础上，借助于机械系统运动学及动力学分析软件ADAMS，首先从单转向架出发，仿真分析了磁浮列车单转向架的解耦能力；接着对单转向架样机模型进行了控制系统的仿真；然后对一辆整车在竖曲线和平曲线的运行在ADAMS中进行了仿真，分析了列车在坡道和弯道上的运行状态；最后对磁浮列车在坡道和弯道上运行时的系统性能进行仿真分析，进一步研究了控制系统和线路参数对磁浮列车悬浮性能的影响。

The performance of magnetic levitation is determined mainly by the characteristic of its controller and solving the problems of the high precision, high esponse frequency, output immune from the disturbance, the parameter perturbation and the uncertain factors from outside is very difficult. The traditional methods can not meet the needs of the system. So it has great significance to study the control method of magnetic levitation.

磁悬浮系统性能的优劣很大程度上取决于控制器的特性，高精度、高响应频率和输出不受外界干扰的特性以及磁悬浮中参数的摄动和外界不确定的干扰因素都是难以解决的棘手问题，传统控制难以满足系统要求，因此对控制方法的研究有其非常重要的意义。

The performance of magnetic levitation is determined mainly by the characteristic of its controller and solving the problems of the high precision, high response frequency, output immune from the disturbance, the parameter perturbation and the uncertain factors from outside is very difficult. The traditional methods can not meet the needs of the system. So it has great significance to study the control method of magnetic levitation.

磁悬浮系统性能的优劣很大程度上取决于控制器的特性，高精度、高响应频率和输出不受外界干扰的特性以及磁悬浮中参数的摄动和外界不确定的干扰因素都是难以解决的棘手问题，传统控制难以满足系统要求，因此对控制方法的研究有其非常重要的意义。

Now you get to the secret of levitation and how Criss Angle performs the levitation when he reveals the trick.

现在你去的秘密磁悬浮，以及如何criss的角度来执行磁悬浮时，他揭示了伎俩。

Single-axis acoustic levitation was investigated by a BEM model corresponding to our levitator and the levitation characteristics were revealed.

采用边界元方法对单轴式声悬浮过程中的入射声场计算，揭示了样品在声悬浮过程中的受力特性。

Single-axis acoustic levitation of the heaviest solid (iridium, p = 22.6g/cm3) and liquid (mercury, p = 13.6g/cm3) on the earth is achieved by greatly enhancing both the levitation force and stability through optimizing the geometric parameters of the self-developed single-axis acoustic levitator.

对自行研制的单轴式声悬浮器进行了优化设计，极大地提高了悬浮力和悬浮稳定性，首次悬浮起自然界中密度最大的固体铱(I-r，密度22.6g／cm~3)和液体汞(Hg，密度13.6g／cm~3)。

The levitation control scheme is the key problem of the magnetically levitated system and the propulsion system has to be designed on the basis of stable levitation.

悬浮控制是磁悬浮系统的关键问题，其驱动系统必须在稳定悬浮的基础上设计。

For more difficult levitation magic stunt, such as levitation on the open space, open ground or open area, and Criss Angel levitates to a rather high altitude, it involves video tricks that audience are part of the magic and magician are supported by wire, as explained in the following video.

为更困难的悬浮魔术特技，如悬浮于开放空间，开放的地面或开放地区，并criss天使levitates到一个相当高的海拔，它涉及到视频伎俩受众的一部分，魔术和魔术师的支持线，作为解释，在下列影片。

Taking the magnetic field of magnetic levitation ball control system as an example,the FEM analysis method for the axial magnetic field have been described, which in nonlinear on the base of analysis of the principles of electromagnetic suspension control system.

在分析电磁悬浮控制系统基本原理的基础上，以磁浮球控制系统的磁场为例，论述了轴对称非线性磁场的有限元分析方法，建立了有限元方程，应用二维磁场有限元软件对在不同的悬浮气隙下的磁场吸力进行了精确的计算。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。