沙面层 meaning in English
sand course
Examples
- Being high - strong , sound - absorption and beautiful , the manufacture configuration concludes the perforation layer , the reinforcing steel bar layer and the sound - absorption layer
产品结构由穿孔面层（喷沙面层） ? ?钢筋加强层（玻璃纤维层） ? ?吸声层复合而成，融高强、吸声、美观于一体。