air layer的用法和樣例：
例句
- The layer of air near the earth is cooler than an overlying layer.
靠近地表的空氣層比其上面的層氣溫低。 - If the thickness of one air layer is changed, a defect comes into being, and the corresponding defect mode in the PBG will change accordingly.
如果改變某空氣層的厚度，會在光帶隙中產生缺陷態，缺陷態的位置隨該空氣層的厚度的改變而改變。
