geometrical acoustics meaning in English

几何声学
射线声学

At present , auralization software and research fruit based on geometrical acoustics ca n ' t solve problems above . in this dissertation , the finite element method ( fem ) and adaptive finite element method ( afem ) to auralization in small enclosures are presented . relative problems are studied and some effective approaches for the problems " settlements are given
本文将波动声学为理论基础的有限元法( finiteelementmethod ，简称fem )及自适应有限元法( adaptivefiniteelementmethod ，简称afem )成功地引入到小尺度封闭空间可听化研究中，对相关问题进行了深入研究，提出了一系列解决问题的有效方法。