人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
tokens that were also printed in part with a Carbon-14 ink. Carbon-14 is。safew官方下载对此有专业解读
微软公布「玻璃盘」，容量 4.8TB 可保存上万年，这一点在同城约会中也有详细论述
Danny Fullbrook
Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.