The negative feedback system with fixed bias is designed based on nonlinear response of the magnetostrictive materials so as to keep the sensor work at its most sensitive situation.
2
它在超导磁场下有较高灵敏度、重复性、低线性误差，所以可以用于测量高磁场和作为低温高斯计的探头。
It may be used for the measurement of high magneticfields and be used as a probe for Gauss meter in low Temperature.
3
该问题属不定问题，即根据探头测量的微小磁场所建立的方程组求得的未知脑磁源有无穷组解。
This question belongs to the indeterminate problem, that is, infinite solutions can be obtained from the equations of the measured small magnetic fields on the detector.
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