每一个感光元件都有自己的电极，这些电极与视网膜中的被称为极性细胞的神经细胞联结，这些细胞是眼睛与大脑连接中的第一个传输单元。
Each sensor has its own microelectrode, and these are placed in contact with nerve cells in the retina, called bipolar cells, the first step on the pathway from the eye to the brain.
如果这一极性的有无能够被逻辑装置或是记忆元件测得，我们就可以用一微弱电场来改变其极性，同时获知极性的有无状态。
If you're monitoring the polarization for a logic device or memory element, you can apply a small electric field to traverse this boundary and simultaneously read and write the on-and-off state.
选择模式匹配的方法对电路板上的元器件进行检测，实现元件丢失和极性检测。
Pattern matching is selected for the inspection of the components on PCB to detect the lost and polarity fault of components.
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