1) terrestrial age
居地年龄
1.
In the past two decades ,terrestrial ages of a few hundred meteorites were determined, mainly on the basis of the 36 Cl or 14 C concentrations.
在过去 2 0年 ,主要根据36Cl或1 4 C的浓度测定了几百个南极陨石的居地年龄。
2) geological age
地质年龄
1.
This paper uses geomath techniques to deal with geological ages and major chemical compostion of volcanics on basis of petrochemical feature, field occurrences and erosion degree and division of volcanism is made into 5 eruption stages and 2 cycles.
本文应用数学地质方法对火山岩地质年龄值和某些重要化学组分进行研究，结合火山岩岩石化学特征、野外产状、风化剥蚀程度等进行分期分类。
3) Terrace age
阶地年龄
4) Cutting blank age
迹地年龄
5) strata age
地层年龄
1.
The application to constrain strata age is illustrated by dating the Cretaceous sediment in western Qinling Mountain.
本文以西秦岭地区三岔—四店一带的白垩纪地层为例 ,说明该方法在制约地层年龄中的应用。
6) Ages of landforms
地貌年龄
补充资料：地居天
【地居天】
（界名）五类天之一。六欲天中四王天忉利天之二者，以居住于须弥山，谓之地居天。余四天者空居天也。见秘藏记末。
（界名）五类天之一。六欲天中四王天忉利天之二者，以居住于须弥山，谓之地居天。余四天者空居天也。见秘藏记末。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条