The line connecting the point and the center bisects the included Angle of the two tangent lines.

这一点和圆心的连线平分这两条切线的夹角。

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With the reasonable included Angle, the inclination of ribs can improve the lateral stability of arch efficiently.

在合理内倾角度下，拱肋内倾可以有效地提高拱的横向稳定性。

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All these indicate the included Angle of the dovetail groove is an important design variable in the rubber O-sealing ring design.

充分说明梯形槽夹角是梯形槽o形橡胶密封圈设计中必须关注的一个重要设计变量。

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Baumgartner wore a chest pack that included, among many other devices, a wide-angle camera that captured a first-person view of the supersonic fall.

FORBES: Watch Felix Baumgartner's First-Person View Of His Death Spin