The direction to an object from a point, expressed as a horizontal angle measured clockwise from true north.

从一点到目标的方向，表示为从北开始顺时针测量的一个水平角度。

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PROFILE: The true picture of a surface in relation to a horizontal line; a contour of a designated surface of a cup, cone, or roller.

型面轮廓：与水平线相比表面的实际轮廓线；实际设计的外圈，内圈或滚子的轮廓线。

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Note that some horizontal Wells are designed such that after reaching true 90-degree horizontal, the wellbore may actually start drilling upward.

请注意，一些水平井是这样设计的，在井眼倾角到达90度之后，井眼可能实际开始向上钻进。

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