查询词典 The Magnet

Unexpectedly the vanishing magnetic cubic anisotropy in Permalloy is found to be independent of its atomic structure but depends only upon the stoichiometry of Fe and Ni in the Fe_x Ni_(1-x) alloy. This new observation is further investigated and confirmed by first principles electronic band calculations, which helps to understand the long-standing issue why Permalloy should be a soft magnet.

我们发现立方磁晶各向异性能(K_1)消失这个Permalloy的软磁特性跟具体晶体结构无关，只取决于化学组分，第一性原理能带计算也验证了这一实验结果，从而有助于理解为何Permalloy很软这个长期未解决的问题。

Disclosed is a bone-conduction transducer comprising a plate-shaped yoke bent to form a pair of cut portions at both ends thereof; voice coils fitted to a center extension of the cut portions; a magnet and a plate of rectangular parallelepiped shape disposed between the voice coils; and a diaphragm minutely spaced from a lower part of the plate.

公开了一种骨传导传感器，包括：板形轭铁，受弯曲而于轭铁两端形成一对切口部；安装在切口部的中央延伸部上的话音线圈；设置在话音线圈之间的磁铁和矩形平行六面体板；以及与板下部微微隔开的膜片。

In order to adjust the effective length of magnet and to improve the dispersivity of the 16 dipole magnets,dispersivity is ceaselessly measured after adding or taking out silicon steel slice or changing current of rectifiable coil.

实验环二极铁采用不断地加减硅钢铁片垫补和加调整线圈电流的方法来调整二极磁铁的有效长度来改变分散性。

According to the theory of remanence, the intensity of remanence is in direct proportion to the density of magnet and Ms.

究其原因：晶粒的细化可以提高磁体的矫顽力；而根据剩磁的理论公式，剩磁与磁体密度和饱和磁化强度成正比，剩磁的提高是磁体密度和饱和磁化强度的提高的综合效果，但其中饱和磁化强度的提高占主导地位。

As the time of ball milling increases in powder processing, the remanence and alignment of magnet gets better, and then decreases after the maximum point.

粉末球磨过程中，随着球磨时间的增加，磁体的剩磁和取向度增加，达到最大值后开始下降。

The torque ripple in direct torque control system of permanent magnet synchronous motor is analyzed. To decrease the torque ripple in PMSM DTC, a PMSM DTC system based on the strategy of modulating the time of voltage vector is proposed .

讨论了永磁同步电机直接转矩控制转矩脉动问题，针对永磁同步电机直接转矩控制存在较大脉动转矩的缺点，提出了一种模糊调节电压矢量作用时间的永磁同步电机直接转矩控制策略。

Because the 2nd harmonic of self inductance is larger than that of the mutual inductance, which is not agree with Park transform, so the saturated mathematical model under a, b, c phase coordinate system of pulsating magnetic field permanent magnet low speed synchronous motor is constructed.

利用有限元方法计算了脉振磁场永磁低速同步电动机参数变化规律，由于自感二次成分远大于互感二次成分，不满足Park变换条件，在a、b、c相坐标下建立电机饱和数学模型。

The voice coil motor components include a permanent magnet and an electric coil attached to the slide bar, powered by the power amplifier.

音圈电机的组成部分包括一个永磁体和一个电动线圈附在滑动条，采用功率放大器。

This invention relates to a new type nanometer crystal Fe-Zr-Nb-Si-Al-Cu series soft magnetic alloy super thin band and its process technology in which, the mother alloy is smelted by vacuum IF induction oven, an amorphous band is processed by a single quick cooling device to be processed by magnetic field heating at last to get the needed product with good soft magnet performance and iron core made by the super thin band improves its magnetic performance greatly.

本发明为一种新型纳米晶Fe-Zr-Nb-Si-Al-Cu系软磁合金超薄带及其制备工艺。由真空中频感应炉冶炼母合金，用单辊冷急装置制得非晶带，最后对非晶带进行磁场热处理，从而制得所需产品。本发明的合金超薄带具有优良的软磁性能，生产成本也较低。由本发明的超薄带制得的铁芯，其磁性能有很大改善，在国防和民用工业方面有广泛用途。

Additionally, the capture model has some reference values to computing the indirect feed system of the magnetic flux compression generators (e. g. indirect feed coil and permanent magnet).

另外两级磁通俘获模型对于间接馈电装置模拟计算也有一定的参考价值。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。