The copper plates conducted heat rapidly to and from the bismuthtelluride, thus maintaining the temperature difference.
铜片可以把热量迅速地传递到碲化铋上或从碲化铋上导出，这样就能保持气温差。
2
They work because certain materials, such as bismuthtelluride, generate an electrical potential difference within themselves if one part is hotter than another.
它们之所以能起作用是因为一般的材料，比如碲化铋，如果其中一部分比另一部分热，内部就会产生电位差。
3
The second desideratum, of low thermal and high electrical conductivity, was achieved by dividing the bismuthtelluride into pellets a few nanometres across.