In this paper, by the normal-mode theory the angular distribution of the sound field in layered media is discussed, the general expression of angular distribution function and attenuation law for directional reception are obtained. 本文应用简正波理论讨论分层介质中声场的角度分布,获得了声场角度分布的一般表达式,以及定向接收时的声场衰减规律。
Directional expectations outline the basic trend for literature reception, while innovative expectations are more interior and profound. The internal unification of them reveals the values of literary works. 定向期待为文学接受规定了基本的走向,创新期待是文学接受更内在、更深层的期待,二者的内在统一实现了文学作品的价值。
Pure Directional Transmission and Reception Algorithms in Wireless Ad Hoc Networks with Directional Antennas 定向天线自组织网中的纯定向传输/接收算法