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.
应用推荐