当一个大型天体撞击行星或月球时，物质会被抛射出去，从而在行星上形成一个洞，造成局部质量不足的现象。
When a large body strikes a planet or moon, material is ejected, thereby creating a hole in the planet and a local deficit of mass.
但是就算是这样，这次撞击的规模如此之小，它对环境产生的影响应该比较小，影响范围也是局部的。
But even if it is, it is so much smaller that its environmental effect would have been both minor and local.
介绍和评价通用的计算撞击局部效应的公式。
The general formulas for calculation of local impact effects are presented and reviewed.
局部收集系数反映了空气中过冷水滴的撞击特性，对其进行计算是防、除冰研究的重要方面。
It is a significant aspect for research of local collection efficiencies that reflect the impingement properties of the super cooling water droplets in the air.
分析结果表明，超高车辆撞击使桥梁上部结构产生整体变形损伤、局部破坏甚至落梁破坏，撞击荷载包括撞击冲量和局部冲击力，不同车型撞击荷载差别较大。
Study results show that the damage modes of bridge superstructures impacted by over-high trucks include global deformation damage, local damage and girder-falling.
支板驻点处由于水滴飞溅造成水滴收集率下降了11.8%，同时由于水滴在局部地方的反弹使得撞击极限下降了35.7%。
Also, due to the splash and rebounding influence the droplet collection efficiency and impingement limit decrease 11.8% and 35.7%, respectively.
支板驻点处由于水滴飞溅造成水滴收集率下降了11.8%，同时由于水滴在局部地方的反弹使得撞击极限下降了35.7%。
Also, due to the splash and rebounding influence the droplet collection efficiency and impingement limit decrease 11.8% and 35.7%, respectively.
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