What information hiding is prior to encryption is that information hiding causes much less attention of attackers and decreases the probability of being attacked.
信息隐藏优于传统加密技术的地方在于信息隐藏能够不引起攻击者的留意，从而减少被攻击的概率；
As the eccentric wear of pumping rods occurs in the high Angle deviated intervals with higher probability, so centralizer should be taken technical measure as encryption.
大斜度井段抽油杆发生偏磨的概率较大，应采取扶正器加密的技术措施。
As the eccentric wear of pumping rods occurs in the high Angle deviated intervals with higher probability, so centralizer should be taken technical measure as encryption.
大斜度井段抽油杆发生偏磨的概率较大，应采取扶正器加密的技术措施。
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