1.a light touch or stroke
2.a small quantity of something moist or soft;
a dab of paint
1.apply (usually a liquid) to a surface;
dab the wall with paint
2.hit lightly;
pat him on the shoulder
DAB是( Digital Audio Broadcasting)的简写,它提供了接近CD质量的声音,广播及商机无限的附加数据服务,听众可更容易地收听,完全无干扰广播业者以较低的发射费用提供CD质量的节目给听众,也会带动接收机和发射机产业的商机,更可推动广播天空迈向多媒体广播(DMB)的世界。