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bit burnt
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bit burnt
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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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Patricia Kathleen Page
Patricians
Patrick Anthony McCarran
Patrick Colquhoun
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Patrick G.Wilson
Patrick Henry
Patrick Jay Hurley
Patrick Manson
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Patrick Tam
Patrick White(Victor Martindale)
Patrick Zachmann
Patriot Advanced Capability-3 missile
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Patriotic Front
patriotic health campaign
Patriotic Lady's Seminary and Patriotic Study Society
Patriotic Soul
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patroclinal inheritance
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