tunable filter短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 可调谐滤光器,可邓波器 Numerical examples showed it is suitable for the2D acoustical field on the substrate region of acoustic optical tunable filter with tapered acoustical directional coupler. 并用渐变型声指向耦合器中表面声波导二维声场的计算实例说明该方法的实用性。 dictall