scanning index信息详情
扫描索引
index───vi.做索引;vt.指出;编入索引中;n.指标;指数;索引;指针
scanning devices───扫描设备
alanine scanning───丙氨酸扫描
barcode scanning───条形码扫描
interlaced scanning───[电子]隔行扫描
scanning device───扫描器,扫描设备,扫描法;[电子]扫描装置;扫描法
scanning mode───扫描方式
evenness index───均匀性指数
ge index───通用电气指数
Creating an index page, of all articles in a directory or in total, requires scanning the file system for available files.───创建一个索引页,将所有文章都放在一个目录或所有目录中,这样如果想要得到可用的文件就必须扫描该文件系统。
From the performance perspective, this is considered a very efficient join operation, because the cost for scanning the inner table is optimal via unique access through a unique index.───从性能的角度来看,这被认为是一个非常有效的联接操作,因为通过贯穿唯一索引的唯一访问扫描内部表的成本是最优的。
Thus, the search in a large file using a hash index is faster than scanning the entire file.───因此,对于较大的文件,使用hash索引进行搜索比扫描整个文件更快。
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