The models of collision speed and collision Angle relating to horizontal curve radium and its direction, hard shoulder width and operation speed are derived by regression.

通过回归分别建立了碰撞速度、碰撞角度与平曲线半径及转向、运行速度、硬路肩宽度的相关模型。

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Throughcalculation of temperature rising callused by them, melt criterion is given, the thickness of melted layer near explosive welding interface with small collision Angle is estimated.

通过计算绝热压缩温升和畸变形能沉积产生的温升，给出熔化判据，定量估计出了在小碰撞角下爆炸焊接界面熔化层厚度。

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This means that not only were they at different altitudes but also their orbits intersected at about a 10-degree Angle. There was no danger of collision.

这意味着他们不但处于不同的高度，轨道也有约10度的交角，没有碰撞的危险。

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The severity of the laboratory test was equivalent to an oblique collision with the rocky surface of the Earth - a comet coming in at an angle of less than 25 degrees from the horizon, rather than head on (perpendicular to the Earth's surface).

BBC: Comets could have seeded life on Earth