GAPAn.地对空无人驾驶截击机gapn.缺口；裂缝；差距；空白gap average current detection间隙平均电流检测gap in the income distribution收入分配差距gap between deposits and loans存差gap regudation of steam sealing汽封间隙调整gap between imports and exports进出口差额gap-clearance of piston rings活塞环开口gap magnetic induction strength间隙磁感应强度gap between wealthy and poverty贫富不均Gap between Richness and Poverty贫富差距gap between city and countryside城乡差距