In electrical circuits, we use many resistances. You will see four or five ring printed on them. Despite of using multimeter, you have another choice to judge it. You can read the color of each ring and get the exact resistance.
此文已在《广西轻工业》2009年12月刊发表，原文见刊物27页，版权所有，请勿转载，如有需要，请联系本人，邮箱zp1214#gmail.com。
作者：张鹏；曾狄根；黄学章（中南大学能源科学与工程学院，湖南长沙，410083）
【摘要】为研究半导体温差发电在工业余热利用中的可行性，设计了半导体温差发电测试实验装置，利用该实验装置测试了半导体温差发电器的输出特性、分析出了影响其输出特性的因素、计算了温差发电成本。实验结果表明，半导体温差发电用于工业余热利用是可行的，其发电1.89年其发电成本就相当于目前工业用电成本。
【关键词】温差发电；输出特性；余热利用
【中图分类号】 TM911 【文献标识码】A
在电子电路中经常使用到电阻，电阻有很多的种类和形式，在电子电路中，我们通常会使用到色环电阻，色环电阻的阻值就是根据不同颜色的环来确定其阻值的。
The idea of Euler method is to use an approximation yn stands for the real y(xn) and then use the inverse multiply a step to calculate the yn+1. When we use a small step ‘h’, we will gain a curve similar to the real line. For more accurate, we improve the Euler method and it let us calculate with less works. » Read more
首先，什么是尤拉方法？尤拉方法的思想是利用近似值yn代替y(xn)的值，然后利用曲线倒数乘以一个设定的步长得出yn+1的值，当我们设定的步长比较小的时候，所得的拟合曲线便会有足够的精度，然而为进一步提高计算的精度，结合梯形方法即可以形成改进尤拉格式，这样在进行热工数值计算时能够使精度足够且计算量较小。
最近发表论文才来了解了一下关于论文索引的一些东西。引文索引的作用在于通过它检索出一篇论文被哪些其他论文引用过，被引用得越多的论文，一般来说就越重要。因此来说，被收录的论文通常较之未被收录的论文在各种学术领域或者说评比中能够有更大的优势。
During our college class, we did many electrical and electronic experiments, but this term we have done two important experiments. The first one is to control electric motor, the other is make a radio. I once mentioned them summer holiday. Now, I will remember the two experiment with pictures.
Since my thermoelectric experiment is not a necessary for any class but just I applyed it, this two experiment are required by electrical and electronic classs.
We are now doing a research on thermoelectric. Yesterday, zhangpeng stayed at lab for a whole day except having lunch. We have done many experiments on the thermoelectric generator. I’l like to share some picture with you also to encourage myself.
Thermoelectric generation based on theory of seececk effect.
