...：某测点处的井 眼方向线与通过该点的重力线之间的夹角称为该点的井斜角。通常用希腊字母α表示。 3、井斜方位角（Hole Direction）：是以正北方位线为始边，顺时针旋转至井斜方位线所转过的角度。通常以表示，单位度。
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... hole deviation 井斜 hole direction 井眼方位角 hole drag 井眼阻力 ...
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hole direction angle 井斜方位角
direction hole 定向井
·2,447,543篇论文数据，部分数据来源于NoteExpress
His decision delighted both his family and his new club Saracens, but it leaves a gaping hole in a Fijian pack which continually cries out for direction.
BBC: Raiwalui on life after Fiji
Not enough when the hole is as deep as this recession caused, but the direction is the right direction.
WHITEHOUSE: Press Briefing
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