256MDRAM深槽制造工艺，有相关DRAM发展历史等，还有详细的制作工程的图和动画，方便一目了然的了解具体工艺过程-256MDRAM deep grooves manufacturing process, history and other relevant DRAM development, as well as the production of detailed engineering diagrams and animations to facilitate understanding of the specific process at a glance