excess charge carrier

例句：

1. 1.The excess charge carriers are causing the circuit to short out.
   过剩载流子导致电路短路。
2. 2. In this experiment, we found that the excess charge carriers were responsible for the observed phenomena.
   在这个实验中，我们发现过剩载流子是导致观察到的现象的原因。
3. 3. The excess charge carriers are being studied in order to improve our understanding of how these materials work.
   正在研究过剩载流子，以增进我们对这些材料工作原理的理解。