中文摘要：

在分层的结构被获得的压电的底层和金属电影的声学的波浪的精确答案。阶段速度，机电的联合系数和静态的电容被计算在答案之上基于。陈和 Hau 是理论被用来分析表面声学的波浪在弄短与单身者一起的栅栏摸每个时期和一脱衣的思考系数表情被介绍。X112 潦 g 上的铝的参数 ?? 膰？？

英文摘要：

Accurate solutions of acoustic waves in piezoelectric substrate and metal film as layered structure were obtained. Phase velocity, electromechanical coupling coefficient and static capacitance were calculated based upon the solutions. Chen and Haus＇ theory was used to analyze surface acoustic waves in shorten gratings with single finger every period and a reflection coefficient expression of one strip was presented. Parameters of aluminum on X-112°Y LiTaO3 and gold on ST-quartz were calculated. The results agreed well with those from Ken-ya Hashimoto＇s theory. The reflection coefficient of gold on ST-quartz was measured to verify the theoretical result.