soundn.声音；嘈杂声；音乐风格；曲调；印象；感觉；海峡；鱼鳔；探针v.听起来；感觉起来；发出声音；发音；探测深度；探询adj.有效的；合理的；可靠的；全面的；健康的；完好的；酣睡的；严厉的adv.酣畅地sound sleep熟睡

1. A new type of porous sound absorbing material was made from super-strength gypsum and glass fiber.
   摘要以高强石膏为胶凝材料，内掺玻璃纤维，制备出一种新型多孔吸声材料。
2. The paper chooses the appropriate muffler,and experiments with the capability of sound absorption material,and designs the dustproof project.
   本文通过选择合适的消声器以及吸声材料实验和防尘方案的设计。