This paper introduces the trace equation of moving-throw device and the calculating method about the throw Angle.

本文主要是推导出投掷器械运动的轨迹方程和投掷角度的计算方法。

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Hibs came close to an equaliser when Nish latched on to a quick throw to the front post, but the angle was too acute for the striker to find the net.

BBC: Garry Brady, Craig Dargo and John Potter celebrate

Komano found an advanced position but his shot from a wide angle was so far wide that the subsequent throw-in took place almost 18 yards from the byeline.

BBC: Paraguay 0-0 Japan (5-3 pens)