active layer的用法和樣例：
例句
- Since the growth of QD active layers is the key factor to the development of QD lasers, it is most important to study the epitaxy growth of a high quality QD active layer.
由于成長(cháng)量子點(diǎn)活性層為研制量子點(diǎn)雷射的關(guān)鍵技術(shù)，因此如何成長(cháng)出高品質(zhì)的量子點(diǎn)活性層，便成了研發(fā)量子點(diǎn)雷射最重要的工作。
