讨论了慢度曲面与声学模软化之间的关系.立方晶系晶体声学模的软化即对应其在某一方向上的最大慢度,软模的本征矢的方向即为与最大......

In this paper,we present a brief survey on the updated theory of backward stochastic Volterra integral equations(BSVIEs,......