查询词典 electromagnetic

When an intermediate frequency electromagnetic field of 12 kW with the frequency of 2500Hz, high quality hollow billets can be gained. Horizontal electromagnetic continuous casting of copper tube blanks was proposed.

当施加功率为12kW、频率为2500Hz的中频电磁场时，得到了表面光滑、宏观凝固组织中具有高等轴晶的比率的高质量空心管坯。

Inverse electromagnetic problem has been paid attention in the designing of electromagnetic devices for long time.

电磁场逆问题在电磁装置优化设计中是倍受关注的研究课题。

The present thesis aims mainly at studying power absorption of high frequency electromagnetic waves in partially ionized plasma layer in atmospheric conditions, with effects of negative ions in atmosphere, collision rate between electron and neuter gas, the external magnetic field, and nonlinear effects on power absorption of high frequency electromagnetic waves in partially ionized plasma layer under atmospheric conditions.

本文主要研究了高频电磁波在大气压等离子体层中传播和吸收的特性，着重考虑了大气中的负离子、电子与中性气体的碰撞频率、外加磁场、以及非线性现象对高频电磁波在大气压等离子体层中的传播的物理机制和吸收的影响。

The subsistence study of missile system under complex electromagnetic environment analyzes the electromagnetic leakiness threat and electronic detection threat of missile position at first.

复杂电磁环境下导弹武器系统生存研究，首先分析导弹阵地所面临的电磁泄漏威胁和电子侦察威胁。

All in all, the opinion of this article is: General Lorentz magnetic force is the physical essence of electromagnetic induction, while Faraday's law is just the phenomenon of electromagnetic induction.

总之，本文的观点是：广义洛伦兹磁力是电磁感应的物理本质，而法拉第定律只是电磁感应的现象。

Electromagnetic Separators main product, permanent magnet Separators, magnetic separator, the magnetic drum, lifting magnet, metal detectors, electromagnetic vibration feeder, Qiao products are widely used in electricity, cement, building materials, Coal, brick and tile, metallurgy, paper, chemicals, rubber, glass, mining, and other industries.

产品主要有电磁除铁器、永磁除铁器、磁选机、电磁滚筒、起重电磁铁、金属探测仪、电磁振动给料机等，产品广泛诮用于电力、水泥、建材、煤炭、砖瓦、冶金、造纸、化工、橡胶、玻璃、矿山等众多行业。

And 0.4～0.6 respectively for the induction coil with round crosssection and rectangular cross-section; The magnetic flux density of coil made with round pipe was nonuniform, especially near the inner wall of coil turns that caused a fluctuation of electromagnetic pressure on the surface of liquid metal and had a bad effect for forming a sample with uniform cross-section and smooth surface; The system of screen and restraint magnetic field not only had an efficient effect on restraining the electromagnetic stirring and stablizing meniscus, also caused the conecial periphery of melt to be vertical; The position of top and S/L interface of melt had a direct effect on the meniscus shape. The meniscus profile varied from cone-shaped through column to cucurbituceous shape with the increase of top height or decrease of S/L interface.

对圆形截面、矩形截面感应圈来说D/H分别取0.7～1.1，0.4～0.6较为理想；对多匝感应圈来说，在匝间处存在漏磁，易引起熔体表面起伏不平，这种现象在用圆铜管绕制的感应圈中较为明显；屏蔽—抑流系统的加入可以消除电磁搅拌，使熔体稳定性增强，同时可使形态呈锥形的熔体侧面变得垂直成为理想形态；熔体上液面、固/液界面的选位直接影响成型形态，上液面升高，熔体形态经历锥形→柱形→葫芦形的转化，固/液界面下降则经历锥形→葫芦形的转变。

Besides this, the calculation of magnetic energy and electromagnetic torque of SCLRM is deduced by virtual displacement principle, and the physical essence of the electromagnetic torque is also analyzed in detail.

利用虚位移原理推导出了SCLRM中的磁场能量和电磁转矩的计算方法，并详细分析了电磁转矩产生的物理本质。

The method of how to analyze the electromagnetic field of the generator is introduced. And with the help of a kind of FEM software, the parameters of a model machine are calculated and simulated, including the electromagnetic field, no-load voltage, single-side magnetic force, loaded torque and axial force.

其次，对转子带防护罩的高速永磁发电机数学模型进行了推导，介绍了利用有限元法对电机磁场进行分析的方法，并运用有限元软件对一台样机的参数进行了仿真，包括电机磁场分析、空载电压波形、单边磁拉力、负载转矩以及轴向力等方面的内容。

A mathematical model of the Secondary Cooling Segment Electromagnetic Stirring in the billet Continuous Casting is proposed according to the theory of alternating magnetohydrodynamics and magnetic boundary renewal method, then the cause of electromagnetic Stirring phenomena and the effect of operational condition were investigated.

根据正弦时变电磁场条件下的电磁流体力学基本理论及磁场边界更新法，建立了方坯连铸二冷区电磁旋转搅拌的数学模型，并对电磁搅拌的机理和操作条件的影响作用进行了探讨。

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。