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bit burnt
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bit burnt
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孔内事故
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bit burnt
烧钻
在钻进过程中,由于循环系统发生故障,在高速回转时产生高热,钻头与岩心、岩粉烧结在一起的事故。属孔内事故。
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preliminary hearing personnel
preliminary interpretation of remote sensing data for geological features
preliminary investigation
preliminary melting
preliminary orbit
preliminary performance before the big play
Preliminary photography
preliminary position
preliminary prospected well
preliminary question
Preliminary Research on Archival science theory and history
preliminary study report on Wuhan Regional Planning
preliminary survey
preliminary work of hydropower project
preliminary work of mining design
preload
preloading
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prelogical
Prelog rule
pre-Lopingian crisis
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Prelude
prelude
Premack principle
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