Virtual memory is conceptually simple but potentially devastating to performance. Every memory access must go through segmentation (add segment base, check limit) and then paging (look up the page table). Naively, paging alone requires two additional memory reads per access -- one for the page directory entry, one for the page table entry.
4In 2007, Barrangou et al. demonstrated for the first time the function of CRISPR/Cas9 as a defensive mechanism of bacteria against bacteriophage attacks by a technique called “plaquing” which builds upon the technique of “plating” bacteria on agar. Plaques of viruses on agar are areas without growth of bacteria due to viral attacks.
，这一点在爱思助手下载最新版本中也有详细论述
return fleetCount;
按亩均税收、亩均营收等指标打分，加大“优等生”资金补贴，提升土地资源利用效率。在安徽全椒，不断深化的亩均效益改革，推动资源配置从“重量”转向“重质”。
2021年1月，他出任Rimowa首席执行官（CEO），接替Alexandre Arnault，全面负责品牌全球运营，向LVMH集团旗下Le Bon Marché（乐蓬马歇）董事长兼首席执行官Patrice Wagner汇报。