查询词典 permanent magnet

The brushless permanent magnet automobile a. c. generator has the advantages of high reliability, long service life, high efficiency, good performance at both low and high speed, low radio interference, simplifying its associated voltage regulator, cutting down materials, technology simplified, as well as high power/weight ratio, etc.,and will be a new product with broad prospects and large market.

无刷永磁汽车交流发电机由于取消了碳刷、滑环及励磁绕组，可大大提高可靠性，延长使用寿命，具有效率高，低、高速性能好、无线电干扰小，与之匹配的电压调节器结构简单、节约原材料、工艺性能好、比功大等优点。

The control of contactor with a new type of permanent magnet actuator is studied in this thesis.

本文对一种新型永磁机构接触器的控制进行了研究。

About Wenzhou Jiaheng Magnetic Industry Co., Ltd, established in 1998, is specialized in Alnico Permanent Magnet Products, magnetic Alnico development, manufacture, sale and processing of Nd-Fe-B series magnetic materials, sales and product development of magnetic applications of high scientific and technological enterprises.

温州嘉恒磁业有限公司成立于1998年，是专业从事铝镍钴永磁产品、铝镍钴磁粉的开发、制造、销售及钕铁硼系列磁性材料深加工、销售及磁应用产品开发的高科技企业。

The influence of configuration parameter of alnico in surface-mounted permanent magnet synchronous motor on waveform of airgap flux density is systematically analyzed.

系统分析了表贴式永磁同步电动机磁钢结构参数对气隙磁密波形的影响。

Permanent magnet synchronous motors ; alnico ; airgap flux density ; multi-objective optimization ; response surface model ; particle swarm optimization

永磁同步电动机；磁钢；气隙磁密；多目标优化；表面响应模型；微粒群优化算法

It is reported, form by permanent magnet completely on this structure, the dynamo of wind-force of in suspension of complete permanent magnetism that does not take any control systems is by the division in place of the sources of energy of Guangzho......

据悉，这台结构上完全由永磁体构成、不带任何控制系统的全永磁悬浮风力发电机是由中国科学院广州能源所、广州中科恒源。。。。。。

Magnet Levitating Above A Superconducting Ring: The image shows a permanent magnet levitating above a conducting non-magnetic ring with zero resistance.

磁铁轻轻地悬浮在一个超导环上：图为一个永磁体悬浮在一个零电阻的非磁性导体环上。

It takes a cylindrical NdFeB multipole permanent magnet composed of several neighboring tegular magnets magnetized anisotropically along radial direction as exterior actuator, and a magnet with the same structure embedded inside the robot body as the inner actuator. The robot screws forward inside pipe under the action between spiral rib on the exterior surface of robot body and fluid dynamic pressure when robot rotates by magnetic torque, which is generated by magneto-mechanical coupling from rotating exterior actuator to inner one.

它以相邻径向异向磁化瓦状多磁极圆筒形NdFeB永磁体为外驱动器，以机器人内嵌同结构的NdFeB永磁体为内驱动器，外驱动器旋转时产生旋转磁场，通过磁机耦合作用于内嵌驱动器形成机器人驱动力矩，在本体外表面螺纹与流体动压力的作用下，实现机器人在管道内的在线旋进。

To improve the output spectrum of magnetron and make simulated model near to the practical structure,considering the practical structure of the permanent magnet and soft magnet,the magnetic field system of microwave oven magnetrons was modeled and simulated using MAFIA.

为了改善磁控管的输出频谱，使模拟结构更接近实际情况，考虑了磁钢和极靴的实际尺寸。

The intensity of the magnets in permanent-magnet motors can increase as the motor size and output power increase. This causes difficulty in manufacture of large scale PM motors and consequently increases the cost. Post-assembly magnetization can be treated as a solution to the above problem, which fabricates the motors before the magnet is magnetized by applying large current impulse on the motor stator windings.

中文摘要由於永磁马达转子磁铁强度，会随著马达尺寸与输出功率增加而增加，导致大型永磁马达在制作上，因磁铁的强磁性造成组装上的困难，且易有铁粉等杂物附著，使得制作成本增加，故有必要使用新的充磁技术或特殊制程解决。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。