The angles refer to the polar view angle, i. e. the angle measured from the vertical.

角涉及到极面观的角，例如垂直物上测量的角。

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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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Azimuth, in Ellipsometry - the Angle measured between the plane of incidence and the major axis of the ellipse.

椭圆方位角-测量入射面和主晶轴之间的角度。

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During the swims, the researchers measured the volunteers' oxygen consumption, rectal temperature, swim speed and angle, and stroke rate and length.

BBC: Cold water increases drowning risk