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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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underdeterminate system
underdetermined
underdetermined linear system
underdetermined system
underdetermined system of equations
underdevelopment
underdoped regime
underdoping
underdot
underestimate algorithm
underexposure
underfitting
underfloor air distribution
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underflow tube
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under-forest economy
under fur
underglaze blue
underglaze dark blue glaze
underglaze dark blue glazed
underglaze decoration
underglaze red
undergoing professional training at an old-type opera school
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