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centralizer
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中心化子,定心器
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详细解释：
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以下为句子列表：
英文: Rough and fine cutting, drilling and boring can be conducted for petroleum drill devices such as drill collar, integral heavy wall drill pipe, centralizer as well as other large-sized and super long axis parts with diameter less than 1600mm and length les
中文: 在此可以对钻铤、加重钻杆、扶正器等石油钻具和其他直径小于1600毫米、长度小于18000毫米的大型、超长轴类零件进行粗、精车削和钻、镗加工。
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英文: Using the λ-Threshold, some definitions of the anti-fuzzy subgroups, anti-fuzzy normal subgroups, anti-fuzzy normalize and anti-fuzzy centralizer are introduced. Some properties of anti-fuzzy subgroups are discussed.
中文: 摘要本文利用λ-截集引入了反模糊子群、反模糊正规子群、反模糊正规化子及反模糊中心化子的概念，并讨论了它们的性质。
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英文: TYF - centralizer with the structure of eight arms and four sheaves
中文: TYF-型八臂四轮式扶正器
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