And since the rate of impacts was presumably similar throughout the solar system, the lunar dates could be used as a benchmark to estimate the age of surfaces elsewhere.
由于在整个太阳系影响的比率是相似的，月亮的年龄可以用标准估算其他地方表面的年龄。
2
Objective Based on two sets of data from occupational epidemiology, Benchmark dose( BMD) was applied to estimate biological exposure limit (BEL).