And so there's two different poles, a negative and a positive pole here.

这里有两个不同，一个负和一个正。

The corresponding chest electrodes serve as the positive poles.

应胸正。

Lead I uses the Right Arm as the negative pole and Left Arm as the positive pole, forming a vector that goes to the right.

I导联将右臂作为负，左臂作为正，形成一个指向右侧（左臂）向量。

They use ONE limb electrode as the positive pole, and take the average of inputs from the OTHER two as the zero reference.

它们将1个肢体作为正，并取另两个肢体输入平均值作为零参考。

Thus, the position of the positive pole is the " point of view" , and the line connecting the 2 poles is the " line of sight" .

因此，正位置“视角”，连接两线“视线”。