1、Many scientists provided valuable research and input into the creation of the geologic time scale.
許多科學(xué)家為地質(zhì)時(shí)間尺度的建立提供了有價(jià)值的研究和投入。

2、Geologic time unit, rock stratigraphic units and time stratigraphic unit.
地質(zhì)年代單位、巖石地層單位、年代地層單位。

3、Although rare on human timescales, over geologic time earthquakes are frequent in the area.
影響地質(zhì)時(shí)期的大地震雖然在人類的歷史中非常罕見，但該地區(qū)地震活動(dòng)自古以來就非常頻繁。

4、A unit of geologic time that is a division of a period
世地理學(xué)中小于紀(jì)的時(shí)間單位

5、A unit of geologic time that is a division of a period.
世地理學(xué)中小于紀(jì)的時(shí)間單位

6、As he explains, the Geologic Time Scale is largely based on the stratigraphic record.
他解釋說，地質(zhì)時(shí)間尺度很大程度上基于對地層的記錄。