数据迁移：全量+增量同步与元数据一致性保障
국힘, 靑 앞서 의총…“李, 사법 악법 공포하면 역사 죄인될 것”
二是规模效应。销量翻倍后，工厂满负荷运转，单位产品分摊的固定折旧和人工成本被摊薄。
Every customer who buys directly from Apple Retail gets access to Personal Setup. In these guided online sessions, a Specialist can walk them through setup, or focus on features that help them make the most of their new device. Customers can also learn more about getting started and going further with their new device with a Today at Apple session at their nearest Apple Store.