查询词典 magnetic

Faraday's law is that when the flux in the conductor loop changes, it produces electromotive force in the conductor loop, and obeys to contour integral law , Maxwell Curl Theory is that when the magnetic intensity of a certain point in ether space changes, there produces electric field at that point in ether space, which is the field mutual production theory of "electric field produces magnetic field and magnetic field produces electric field" in the free space which everybody is familiar with, and it obeys differential law , Lorentz magnetic force is that when metal electrons cut magnetic lines, metal electrons forced by move along the conductor to form inductive current, in fact, it doesn't matter whether coil moves or magnet moves, only if there exists relative motion between magnetic field and conductor, metal electrons must cut magnetic lines, which is,"coil stills while magnet moves to the left" and "magnet stills while coil moves to the right" these two situations are the same, which both belong to metal electrons having cut magnetic lines.

法拉第定律指导体环路里的磁通量发生变化时，在导体环路上产生电动势，而且服从围线积分律；麦克斯韦旋度理论指以太空间某点的磁场强度发生变化时，在以太空间的该点产生电场，即大家熟知的自由空间里"电场生磁场与磁场生电场"之互生场理论，而且服从微分律；洛伦兹磁力指金属电子切割磁力线时，金属电子受力沿着导体漂移而形成感应电流，其实，无论线圈运动或是磁铁运动，只要磁场与导体存在相对运动，则金属电子必然切割磁力线，即，"线圈静止而磁铁向左运动"与"磁铁静止而线圈向右运动"这两种情况是一样的，都属于金属电子切割了磁力线。

In particular, it is unknown how the relevant neural substrates function as a network to mediate perspective-taking during the task requiring understanding other's belief. The current work first developed a new psychological paradigm that excludes potential confounds such as the processing of language, biological motion, episodic memory and causal coherence in the paradigms used in previous studies. I recorded neural activities associated with mental inference task using functional magnetic resonance imaging and electroencephalography in order to investigate the functional roles of several brain areas (i.e. precuneus, MPFC, etc.) that engage in understanding other's belief. I also proposed a computational model based on the neuroimaging results that simulated the neurocognitive mechanism underlying cortical dynamics in correct judgment of other's belief.

本文首先发展了一个新的心理学实验范式，排除以往常用&错误信念&范式中与语言加工、生物运动、情景记忆及事件连续性和因果性等方面的混淆，采用功能磁共振成像（functional magnetic resonance imaging， fMRI）和脑电（Electroencephalography， EEG）时频分析等脑成像技术，记录与理解他人信念任务相关的神经活动，通过对行为和脑成像数据的分析，研究楔前叶和内侧前额叶等脑区在理解他人信念任务中的功能意义，并根据脑成像结果，提出一个基于自我和他人视角竞争的计算模型，模拟大脑在理解他人信念时做出正确决策时的认知神经机制。

Abstract］ Objective To assess the permeability and clearance rate of a model for ionic permeants after subconjunctival injection using nuclear magnetic resonance imaging; to investigate a pharmacokinetic method for the ocular region in vivo.

目的 使用磁共振成像(magnetic resonance imaging，MRI)评价兔结膜下药物注射后的渗透性和清除率，探讨一种能够在活体内动态观察的眼部药代动力学检测方法。

Methods The clinical data of 12 patients from Mar 1993 to Jun 2008 with retrocaval ureter were retrospectively analyzed. All the 12 cases were correctly diagnosed preoperatively via the combination of imaging examinations, such as ultrasonography intravenous pyelography、retrograde pyelography、CT or magnetic resonance urography. Ten patients received conventional open surgery and two received retroperitoneal laparoscopic ureteral replacement and ureteroplasty.

总结分析1993年3月至2008年6月12例腔静脉后输尿管患者的临床资料。12例患者术前均经B超、静脉肾盂造影(intravenous pyelography， IVP)、逆行肾盂造影(retrograde pyelography， RP)、CT、磁共振尿路水成像(magnetic resonance urography， MRU)等影像学检查明确诊断，其中10例采用传统的开放手术，2例采用后腹腔镜下输尿管复位矫正术。

The main magnetic bookmark, magnetic WordPad, magnetic darts, magnetic bottle opener, magnetic phone book, magnetic clasp, magnetic toys, magnetic refrigerator, the compass, magnetic stationery, magnetic jewelry, magnetic key chain, magnetic linkage, magnetic buttons and various magnetic gift.

其主要有磁性书签、磁性写字板、磁性飞镖、磁性开瓶器、磁性电话本、磁力扣、磁性玩具、磁性冰箱贴、指南针、磁性文具、磁性首饰、磁性钥匙扣、磁性挂钩、磁性钮扣及各种磁性礼品。

Objective To explore the changes of transcrainal magnetic stimulation motor evoked potentials and spinal cord pathology in rabbit spinal cord injury, and to explore their correlation. Methods A digital weight drop apparatus induced spinal cord lesion was performed to mimic human SCI.

目的 观察兔急性脊髓损伤后经颅磁刺激运动诱发电位(transcranial magnetic stimulation motor evoked pontentials， TMS-MEP)的变化规律，并与脊髓病理变化相比较，探讨其相关性。

Experiment results indicate that the magnetic fluid flux has a direct relation with the magnetic field under the effect of traveling wave magnetic field. The bigger the magnetic field is, the more the flux is, when the structure of the magnetic fluid travellig pump and the saturation magnetization of magnetic fluid are constant. The volumes of the magnetic fluid from the travelling wave pump increase from 1.9 ml to 3.1 ml, when the magnetic field intensity increases from 25 900 A/m to 40 000 A/m. In addition, the change rate of the magnetic fluid decreases with the increase of the magnetic field due to the effect of magnetic field on magnetic fluid viscosity. The bigger the saturation magnetization of the magnetic fluid is, the more the flux is.

结果表明，行波磁场作用下的磁性流体流量与磁场的强度有直接关系：在磁性流体行波泵结构和磁性流体饱和磁化强度相同的条件下，磁场强度越强，其流量越大；当磁场强度从25900A/m增加到40000A/m时，单位时间内从行波泵内流出的磁性流体的体积由1.9 ml增加到3.1 ml；随着磁场强度的不断增加，磁性流体流量的变化率由于磁场对其粘度的影响而减小；而磁性流体的饱和磁化强度越大，其流量也越大。

Firstly, the relationship between the magnetic pole state of active magnetic pole and the running state of passive magnetic pole was analyzed. The electromagnet's four magnetic pole state and switch sequence, which can drive permanent magnet rotate, were ascertained. Secondly, taking one of magnetic pole state NS (N denotes electromagnet's left magnetic pole and S right magnetic pole) as an example, the distribution of space magnetic field was studied. In addition, the mathematical model of space magnetic field was set up based on the magnetic circuit fundamental and using the method of magnetic analysis and modeling. Lastly, the four states' mathematical model of space magnetic field was solved by using the MATLAB.

首先，分析系统主动磁极磁极状态和从动磁极转动状态之间的关系，确定驱动永磁体转动的电磁体4个磁极状态及切换顺序；其次，基于磁路基本原理，通过磁场分析和建模，以电磁体4个磁极状态之一的NS（N表示其左极、S为右极）为例，对电磁体的空间磁场分布进行研究并建立空间磁场数学模型；最后，以MATLAB为平台对4个磁极状态的空间磁场数学模型进行求解，将求解结果与实验数据进行对比。

Early researches have been limited to animal experiment of detecting metabolism of brain. With the development of magnetic resonance spectrum, studying in vivo has come ture on the biochemistry metabolism's level, which makes a new breakthrough for us to continue research of IGE afterward.

以往的研究仅限于动物实验的方法检测其脑内的代谢变化，现在随着磁共振波谱(Magnetic Resonance Spectroscopy， MRS)的应用，无创地从生化代谢水平上研究活体已成为现实，为这一类疾病的研究打开了新的局面。

To observe the magnetic resonance imaging morphological features of radiation encephalopathy in nasopharyngeal carcinoma and investigate their diagnostic value. Methods: The MRI data of 160 lesions from 104 NPC patients with the diagnosis of temporal lobe REP were retrospectively analyzed.

目的鼻咽癌(nasopharyngeal carcinoma，NPC)放疗后放射性脑病(radiation encephalopathy，REP)的表现形式多样，对其多样性表现的报道并不多，本研究观察NPC放射性脑病的磁共振成像(magnetic resonance imaging，MRI)形态学表现特征并探讨其诊断价值。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐