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casing centralizer
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casing centralizer
Encyclopedia
工学
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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optical add drop multiplexer
optical add-drop multiplexer
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optical alignment technology
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optical all-pass filter
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optical aperture-synthesis imaging
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optical astronomy
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更新时间:2025/4/25 18:09:56