考研作文：人脑和电脑的不同

作者词汇基础扎实；句式变化多样，句法方面做的很棒；行文流畅，但衔接词比较少。

Most of traditional copper PCB we found on the market. The coefficients of heat conductivity of dielectrics are between 3~4W/m-K. Of course, we can find 5W or even higher from the market. However, the copper plate beneath the dielectric has coefficient of heat conductivity around 400W/mK accordingly. It is clear that they have much better heat conducting performance than dielectric on top of them. This is causing dielectric to become the bottle neck of heat conducting