例句與造句

1. These unusual densities of states were due to the discrete propagation modes peculiar to the photonic crystal composed of alternative left - handed and right - handed materials , and could be used to make very narrow filters totally different from any conventional types of filters
   這些禁帶中的態(tài)密度是由左右手材料構(gòu)成的一維光子晶體所特有的，它們可用于制造完全不同于常規(guī)濾波器的、頻帶狹窄的新型濾波器。
2. It's difficult to find discrete propagation in a sentence. 用discrete propagation造句挺難的