Scan disk will take sometime ; best go do something else for few hours after the scan started . it could taker longer if its larger hard drive 掃描磁盤需要一些時間;在掃描啟動后的幾個小時里最好做其它事情。更大的硬盤可能花費更長的時間。
Paul nipkow obtains a patent in germany for tv , using a selenium cell and a mechanical scanning disk . first long distance call : boston to nyc 保羅?尼普可夫獲得德國電視發(fā)明專利。他在電視技術(shù)中采用硒光電管和機械掃描盤。第一次長途呼叫:從波士頓到紐約市。
This avoid high cost by using post - pruning measure which require many times for scanning disk data and amount of cpu time . so we gain a high efficiency 這避免了后剪枝策略所需的高昂代價,減少了掃描磁盤數(shù)據(jù)的次數(shù)和大量的cpu時間,進(jìn)一步提高了算法的效率。