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套管扶正器
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套管扶正器
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套管程序
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casing centralizer
套管扶正器
安装在套管本体上,能够使套管居于井眼中心,用以减小套管下放时的阻力和发生黏卡,有利于提高水泥浆的顶替效率和水泥环厚度分布均匀的装置。
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theorem on unique factorization
theorem on zeros
theorem proving
theorem proving analysis
theorem拉斯克-诺特分解定理
theorem最大分离最小距离定理
theorem米塔-列夫勒部分分式定理
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Theoretical and Applied Genetics
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theoretical calculation lag time
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Theoretical capacity of waterway
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theoretical correlogram
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