low bandgap的用法和樣例：
例句
- Without changing the period size, the frequency bandgap is varied when the length of the stretching strip is adjusted.
在不改變周期的情況下，通過調整伸長窄帶長度可以改變帶隙特性頻率。 - It must lose enough energy to fall past the bandgap into the area where electrons are allowed.
它必須失去足夠的能量，屬於過去的帶隙納入地方電子獲准。
