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for subject
Engineering geology
containing
环状
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Chinese
English
带内锥度的
环状
钻头
bevelwall bit
环状
水
pendular water
环状
水系
annular drainage
环状
注水
peripheral flood
环状
注水
perimeter flooding
钻孔和套管间
环状
空间
annular space
环状
钻头
ring bit
环状
钻头
crown bit
环状
间隙
annulus
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