Adopt single some earth, multipoint earthing, mix earth, simulation circuit earth, digital circuit earth introduce PCB printed circuit board earth mentality of designing, design method, skill.
并通过单点接地、多点接地、混合接地、模拟电路接地、数字电路接地介绍了P CB印刷电路板接地的设计思路、设计方法与技巧。
To solve the problem of locating the multipoint earthing of the transformer core, two novel methods, named as high-frequency method and travelling-wave method, are analyzed and compared in detail.
为对变压器铁心发生的多点接地故障进行准确定位提出了高频法和行波法两种检测方法，并对它们进行了较为详细的分析和比较。
A sort of electrostatics problem that using electric image method to solve the electric field in the wedge area between two infinite earthing metal boards are discussed using group theory.
对静电学中用电象法求解两无穷大接地金属板间楔形区域内的电场的题目，利用群论方法加以讨论，给出了可求解的条件及一般的象电荷分布。
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