an independent government agency that regulates interstate and international communications by radio and television and wire and cable and satellite
例句
用作名词 (n.)
Our results demonstrate that complete PBGs can be found in both fcc and sc lattice structures which are absent in PCs composed of isotropic dielectric spheres. 计算结果表明，在简单立方晶格和面心立方晶格中都能够实现全光子带隙，这在各向同性介质球时是不存在的。
美
