磁场强度随空间位移的变化率，用符号dH/dx表示。磁场梯度为一矢量，其方向为磁场梯度变化最大的方向。且均匀磁场中(dH/dx)=0；非均匀磁场中(dH/dx)≠0。
The damage test experiment has been accomplished based on low carbon steel. The result indicates that the distribution of leakage magnetic field gradient of low carbon steel is linear with the maximal tensile stress.
该检测仪不同于现有磁记忆检测仪,对损伤探测的准确性更高,并且不需要测量位移的小车,提高了空间分辨率;(5)完成了损伤测试实验,实验结果表明,低碳钢试件的表面漏磁场梯度分布与曾经受到过的最大应力成线性关系。
参考来源 - 一种新型金属磁记忆检测仪的研制·2,447,543篇论文数据，部分数据来源于NoteExpress
受到的悬浮力大小由温度和磁场梯度共同决定；
The value of the levitation force is determined by the temperature and the gradient of magnetic field.
用洛伦兹拟合定量地得到了三种磁场形貌的磁场梯度。
Then the magnetic field gradient of these magnetic field profiles was obtained quantitatively using Lorentz fit.
因此理解内部磁场梯度对T2弛豫时间的影响是很有必要的。
Thus it is important to understand the effects of diffusion on T2 relaxation times due to internal field gradients.
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