查询词典 magnets

Both nickel and iron are whitish metals that are attracted by magnets.

镍和铁都是能被磁铁吸引的白色金属。

New ideas,new structures and new technologies have been used for the design, manufacture and installment of wiggler in order to achieve the coincidence of the central level planes of magnets and beam vacuum tube.

采用新思想、新结构、新工艺设计和加工超导扭摆磁铁，并在安装过程中确保磁体的准直，实现了磁体的磁中心水平面与束流真空管的中心水平面的重合。

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。

By using different bidentate auxiliary ligands, a number of one- and two-dimensional azido-bridged coordination polymers and molecular magnets were synthesized, including some with novel structures, and the influences of the ligands on the structure and the magneto-structural correlations in some systems were analyzed.

以不同二齿配体为辅助配体合成了多种一维及二维叠氮桥配位聚合物和分子磁体，较系统地分析了辅助配体对结构的影响及部分体系的磁构关系，并获得几种新的叠氮桥联结构类型。

Many veterinarians have been aware of biomagnetic benefits for years, and use magnets to heal fractures quickly, thereby saving the lives of race horses and other animals.

很多兽医运用生物磁好几年了，运用磁来快速治愈骨折，因此而挽救赛马和其他动物的生命(Orz。。。兽医先用么……)。

The rotor of each set has a plurality of permanent magnets disposed circumferentially along an annular air gap opposite the stator poles.

每个组的转子具有多个与定子极相对的、沿环形的气隙在圆周方向上安置的永磁体。

A plurality of magnets and condenser units are also mounted on the inside of a circular nonmagnetic enclosure in a circumferentially spaced direction and outside an interior pipe which is coaxial with the enclosure.

磁铁的复数和冷凝器单位并且登上在圆无磁性的封入物的里面在周围地间隔的方向和外部是同轴的以封入物的内部管子。

The opened magnetic circuit is composed as tow NdFeB permanent magnets and a top plate without U-yoke. After take analyzed deeply for the opened magnet circuit with FEMM (Finite Element Method Magnetics) we find out the field distributing that is separated into three sections . One is the main area what we called as positive field section. Beside the main field there are tow areas that are called the inverted field sections. Loudspeaker arise a very serious distortion when the voice coil moving into inverted field areas. The direction of induced current in the coil part of entered inverted field area is same with the current driving into loudspeaker so that total currents increas largely and heat increase rapidly. With more coils moving into inverted area the voice coil will take on negative inductance properties. It is the main reason that voice coil is burned by heating with increasing current due to arise negative inductance. So opened magnetic circuit is not suitable for the woofers in which the voice coil have wider displacement range. When using this kind magnetic circuit design, the voice coil moving range should be less than the range of positive field to avoid loudspeaker arise serious distortion and heating. Even though voice coil moving range is in the positive area, loudspeaker will still arise more distortion because the field distribution is very cliffy at tow sides of the positive area and full range of magnetic field distribution is not parallel that will arise distortion. Base on above reasons, opened magnetic circuit is not an ideal magnetic circuit for low-frequency loudspeakers. But it can be used in mid-range or high-frequency productions.

开式磁路是由2片钕铁硼磁铁和主导磁板和导磁垫片组成，我们在实践过程中发现这种磁路结构不适合于低频扬声器的使用，我们通过使用FEMM（Finite Element Method Magnetics）软件包对该磁路进行了分析，该磁路的磁场范围被分成3个区域，其中在主导磁板附近形成一个正向磁场，在正向磁场的两边存在反向的磁场，音圈在工作时有很大一部分进入了反向磁场中，在反向磁场内线圈的感应电流方向与驱动电流方向相同，使得音圈呈现出负感抗特性，由于音圈的负感抗特性引起电流的增加导致音圈发热甚至烧毁，因此在扬声器中使用开式磁路时，音圈的运动范围应控制在正向磁场范围之内，否则音圈运动到反向磁场区域时将会产生很大的失真和发热，即使在设计时已经将音圈的运动范围控制在正向磁场范围之内，由于正向磁场的2个边缘磁场强度衰减太快，同时开式磁路中磁场的分布不是平行的，而是自由发散的分布，这样肯定会导致扬声器的非线性失真，因此我们得到的结论是：开式磁路并不是一个理想的磁路，它不适合于低频扬声器的使用，但它还可以应用于中高频扬声器。

One example of a new generation LVAD is HeartWare's intrapericardial HVAD. This miniaturized centrifugal pump is capable of generating up to 10 L/min of flow. Its wearless impeller is suspended in the pump housing through a combination of passive magnets and hydrodynamic thrust bearing.

新一代左室辅助装置的安全性能有了明显的提高，研究者试图将其应用于非终末期心衰的患者，以延长这部分患者的长期生存率，这是心衰器械治疗专题会带给我们的信息。

After optimizing the technological technique, the parameters on microwave magnetic sintering of NdFeB magnets were chosen: the powder with average particle size of 3μm was isostatically pressed at 2000kg/C㎡, and the shape of the green compact is φ18×6mm.

进行工艺优化后，我们所选用的微波烧结参数为：微波功率2kW，粉体的平均粒径3μm，压型压力2t/cm2，初坯为φ18×6mm的圆柱体，烧结最高温度约为900℃，烧结的时间70s左右。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。