作为可选项，搜索能将符合条件的文档按照搜索词语的出现频率并且对比文档长度来排列。
As an option, the search can rank matched documents based on the prevalence of the search words as compared to document length.
它包括的操作有对比度增强、剪切、缩放、几何弯曲和频率范围处理。
It includes such operations as contrast enhancement, cropping, scaling, geometric warping, and frequency domain processing.
这些测试的频率将会与翻转普通氢原子的频率作对比。
The frequency needed to do this can then be compared with that which flips the spin of an ordinary hydrogen atom.
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