EFG：电场梯度

“电场梯度”（Electric Field Gradient）是物理学和材料科学领域的核心概念，常用于描述电场在空间中的变化率。为方便书写与交流，该术语常缩写为EFG，尤其在涉及电子结构、核磁共振等学术研究中频繁出现。

With the theory of electroelastic solids including electric field gradient effects, an antiplane crack in a piezoelectric body is analyzed.
用含有电场梯度(EFG)效应的电弹性体理论分析了压电体中的反平面裂纹问题。
After this, the electric field gradient theory is used to solve the piezoelectric anti-plane crack problem.
然后，将电场梯度(EFG)理论应用于反平面裂纹问题。
First, the derivation of the electric field gradient theory is introduced, including the constitutive equations and the boundary conditions.
首先，介绍了电场梯度(EFG)理论的推导，包括本构方程和边界条件。
Arc action in plasma torch with large anode nozzle and long arc passage has been researched by means of electromagnetism and hot fluid mechanics. It has been showed that the special phenomenon will emerg when temperature gradient and electric field gradient act on fluid.
运用电磁学和热流体学的方法研究了直流大阳极喷嘴长电弧通道等离子体炬中电弧的行为，并通过实验证明了温度梯度与电场梯度(EFG)作用于流体时所产生的特殊现象；
Electric Field Gradient(EFG) Effects in Piezoelectric Anti-plane Crack Problems
压电反平面裂纹问题中的电场梯度(EFG)效应

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