The copper plates conducted heat rapidly to and from the bismuth telluride, thus maintaining the temperature difference.

铜片可以把热量迅速地传递到化铋上或从化铋上导出，这样就保持气温差。

There have been some commercially available cadmium telluride solar cells, from First Solar, that have gotten up to 20 percent.

现在还可以找到First Solar公化镉太阳电池，够将效提高到20%。

You didn't want to go to telluride with him huh?

不想和他去特鲁莱德吗？

They work because certain materials, such as bismuth telluride, generate an electrical potential difference within themselves if one part is hotter than another.

它们之所以用是因为某些材料，比如化铋，如果其中一部分比另一部分热，内部就会产生电位差。

The third objective, efficient design, involved sandwiching the nanostructured bismuth telluride between two copper plates and then enclosing the upper plate (the one coated with the light-absorbing oxides) and the bismuth telluride in a vacuum.

第三个目标是高效设计，它涉及到把纳米级化铋夹在两片铜薄片之间然后把位于上方薄片（这个薄片被覆盖上了吸收光线氧化物）和化铋封入一个真空内。

“To absorb a useful amount of sunlight with silicon we would need to use around 200 micrometers of material. " Major said. " For absorbers such as cadmium telluride, we need to use only 1 percent of the same material.”

“要用硅吸收有用量阳光， 我们需要使用大约 200 微米材料。 ” 梅杰说。“对于像化镉这样吸收体， 我们只需要使用相同材料 1%。