Screw machine product, while species diversity, but different brands of the difference between technology, are using smaller decide frequencycompression technology, homogeneity serious.
螺杆机产品虽然品种多样，但是不同品牌之间的技术差别较小，都是采用定频压缩技术，同质化严重。
2
Patterns in the data: the frequency of recurring patterns in the data determines how effective compression will be for a particular table space or partition.
数据中的模式：对于特定的表空间或分区，数据中重复出现的模式的出现频率将决定压缩的效果。
3
The frequency hopping coded signal is a new pulse compression radar signal, and has great analysis value.