Casing centralizers 套管扶正器
centralizers of idempotents 凸等价关系
Bow-spring casing centralizers 弓形弹簧套管扶正器
local centralizers 局部中心化子
double centralizers 双中心子
The Centralizers of Nest Algebras 套代数的中心化子
Chapter 2 studies centralizers on J -subspace lattice algebras, and shows that such a centralizer is quasi-spatial implemented.
第二章研究J -子空间格代数的中心化子,证明它是拟空间实现的。
参考来源 - J·2,447,543篇论文数据，部分数据来源于NoteExpress
For straight holes, bow spring centralizers are sufficient and commonly used.
对于直井，弓型弹簧扶正器足以满足上述功能，并被通常使用。
There are two distinct classes of centralizers. The older and more common is a simple, low-cost bow-spring design.
有两大类扶正器：有一种使用时间长，且比较普遍、简单、成本低的弓型弹簧设计的扶正器。
Hold centralizers cement baskets on any position of casing, which ensures the positions of centralizers cement basket to meet the design.
可将弹性套管扶正器或水泥伞置于套管本体上的任意部位，确保扶正器的安放位置满足设计要求。
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