Subscribe to America's biggest dictionary and have thousands additional definitions and Sophisticated research—advert cost-free!indicative indicative predespatched indef. donghatok donghatsz donghat donghatunk donghattok donghatnak如下图所示：受敲击的鼓面振幅沿半径方向的分布就是一个贝塞尔函数(考虑正负号)�