年龄测定，是天文学专有名词。
... agatized wood 玛瑙石化木 age determination 年龄测定 age of fishes 鱼类时代 ...
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... age dating 年龄测定 tritium dating 氚测年法,氚测定年龄... dating technique 年代确定技术...
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中华外科杂志082218 关键词： 组织学;年龄测定,骨骼;指骨;特发性脊柱侧凸 [gap=2191]Keywords ：Histology; Age determination by skeleton; Finger phalanges; Idiopathic scoliosis
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放射性年龄测定 radioactive age determination ; radiometric dating ; radiogenic age determination
相对年龄测定 relative dating
裂变径迹法年龄测定 fission track dating method
绝对年龄测定 absolute dating
铀钍铅年龄测定 U-Th-Pb dating
全岩年龄测定 whole rock dating ; whole rock age
铀氦年龄测定法 uranium-helium dating
古地磁年龄测定 palaeomagnetic dating
相反，相对年龄是岩石、化石或矿物的近似年龄，是通过对有关的其他周围物质的年龄测定而得出的年龄。
Relative age, in contrast, is the approximate age of rocks, fossils or minerals made by determining the age of the material relative to other surrounding material.
康定杂岩以往被认为是扬子地块太古宇的基底，但近年来的同位素年龄测定结果表明其并不是形成于太古宙。
The complex was traditionally considered as the Archean basement of the Yangtze Block, but recent isotopic dating results indicate that it was not formed in Archean.
首先是采用BG 1999光释光谱仪选定激发光源，确定释放光子的频率，再用矿物的特征光释光谱作年龄测定。
The selected frequency optical luminescence dating (SFOLD) means that the characteristic frequency of the crystal is used to dating. Equipment BG1999 is created for optical luminescence.
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