main absorption edge

例句：

1. 1.The main absorption edge of the solar cell is crucial for its performance.
   太阳能电池的主要吸收边缘对其性能至关重要。
2. 2. The absorption edge of the material was determined using a spectrometer.
   使用光谱仪确定了材料的吸收边。
3. 3. The absorption edge in this region is due to the presence of a specific impurity.
   这个区域的吸收边是由于特定杂质的存在。