中文说明：三层介质褶积模型正演三层介质褶积模型正演三层介质褶积模型正演三层介质褶积模型正演三层介质褶积模型正演三层介质褶积模型正演三层介质褶积模型正演三层介质褶积模型正演
English Description：
Three layer medium fold product model forward three-layer fold convolution model forward three-layer fold product model forward three-layer fold product model forward three-layer fold product model forward three-layer fold product model forward three-layer fold product model forward three-layer fold convolution model forward