variation magnetic field

Describes the constitution and principle of osteoporosis therapy system, the core part of which is a magnetic field coil made up of variation Helmholts coil.

本文介绍了骨质疏松治疗系统的组成及工作原理。系统核心部件是治疗磁场线圈，采用变异的亥姆霍兹线圈研制而成，性能优良。

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The motion of magnetic domain walls and the variation of MAE intensity in grain-oriented 3% Si-steels acted on by applied tension and a magnetic field have been observed.

本文观察了晶粒取向3%Si-Fe在外加拉应力和磁场作用下，磁畴壁的运动及声发射强度（MAE）变化的一些现象。

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The result indicates that, due to the diurnal variation of the geomagnetic field, the environmental magnetic field is hard to be measured directly at the distance of more than 300m away from the railway.

实测结果表明，由于离开铁路300m以远的环境磁场受地磁场日变化的影响已经无法直接准确获得，因此用理论方法计算显得十分重要。

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The induced variation of anisotropy of the alloys on the process of isothermal annealing at 260& 280 ℃ was measured in a rotating magnetic field with different speeds.

用磁转矩方法测定了在不同旋转速率的磁场作用下合金中感生磁各向异性在等温退火（260&280℃）过程中的变化。

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The one-soliton solution indicates obviously the spin precession around the magnetic field and periodic shape variation induced by the time-varying field as well.

从单孤子解的表达式可以明显看出自旋绕着外磁场进动，且孤子的形状随外磁场的作用周期性变化。

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Normal and quick run ( H. D.) records of the earth's magnetic field were made at Ruili, Yunnan Province during Feb. 16, 1980, total solar eclipse. Daily variation, small disturbance and magnetic pulsation were analysed.

1980年2月16日日全食期间，在云南瑞丽进行了地磁场的正常与快速两种记录，分析了地磁日变化、小扰动和地磁脉动的变化。

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Monito ring of JHE magnetospheric ring current by using magnetic variation field at middle and low latitudes

用中低纬度变化磁场监测磁层环电流强度

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This paper report the corresponding variation between the apparent density of magnetic fluid and magnetic field.

研究了磁流体表观密度与外磁场间的变化规律.

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