直方图怎么求平均值

简介：Like winter thunder, there was a shocking sound, and a purple sun slowly rose up, like an ancient divine bird with three legs and a golden crow coming to the world, emitting infinite light, the purple energy spread, and everything within a ten-mile radius of the spirit puppet was covered in purple. A huge storm enveloped the place, and there were endless crackling sounds, like bursts of winter thunder, thunderous and arrogant.