计算声波由空气经过周期性圆柱空腔的带有钢背衬的橡胶板，出射介质为水的透射和吸声系数。并对比了分别将橡胶和钢板作为压力声学以及都作为压力声学情况下的效果。(A rubber plate with a steel back lined with air through a periodic cylindrical cavity is calculated. The transmission medium is the transmission and sound absorption coefficient of water. The effects of rubber and steel plate as pressure acoustics and pressure acoustics were compared respectively.)