论文部分内容阅读
用联合剖面法工作时要使远极在MN之间不产生电位差,这时要将远极放在无穷远处,实际上这是不可能的,在实际工作中只要远极在MN之间产生电位差很小,可以忽略不计时,远极的距离就视为无穷远了。一般应用远极距离为OA之5—10倍,我们在工作中发现这样的规定不完全合适,因为此时远极的影响虽使曲线基本特点不变,电性界面仍反应得很清楚,但产生如下差异:
Working with the joint profile method to make the far-pole in the MN does not produce a potential difference between the time to be far in the infinite far away, in fact, this is impossible, as long as the far-pole in the MN between far Potential difference is small, can be ignored when not counting, the far distance is regarded as infinity. General application Far distance is 5-10 times as far as OA, we found in work that such a provision is not entirely suitable, because at this time the impact of the far pole although the basic characteristics of the curve unchanged, the electrical interface is still very clear reaction, but Produce the following differences: