其基本思想是：结构在承受动态载荷的作用时，其应变场可用所谓“固有的模态应变场”按某种比例的叠加来表达。
The basic idea is that the strain field response can be regard as a superposition of the so called strain modes multiplied by corresponding time-dependent modal coordinate.
基于声辐射模态分析，建立了外部场压和结构表面振动速度之间关系的传递矩阵。
Based on the acoustic radiation mode analysis, the transfer matrix relating the pressure at every field point to normal component of surface velocity is formed.
前期高原感热场SVD第一、二模态的变化，可以作为黄土高原春季降水异常的预测信号。
The first two patterns variation of the previous sensible heat field over Tibetan Plateau derived from SVD could be the predictor signal for the spring precipitation anomaly in Loess Plateau.
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