模式年龄是根据放射性衰变规律，假定地质样品形成时的初始子体内同位素组成计算得到的年龄。
年轻的钕同位素模式年龄表明该区存在新元古—显生宙的地壳增生。
The young Nd model ages suggest a significant crustal growth in the period of Neoproterozoic-Phanerozoic.
矿石铅同位素模式年龄和石英斑岩体侵入年龄的一致性反映燕山期构造、岩浆和成矿作用的密切关系。
Consistence between isotopic model age of lead ore and intrusion age of quartz porphyry shows close relations among structure movements, magmatism and mineralization in Stage of Yenshan.
凯萨还根据技能水平、种族、年龄、阶级和性别详细分析了失业模式。
Keyssar also scrutinizes unemployment patterns according to skill level, ethnicity, race, age, class, and gender.
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