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- ZIRCON U Pb AGE OF META BASIC LAVA FROM THE KUANPING ROCK GROUP,SHAANXI PROVICE 陕西宽坪岩群变基性熔岩锆石U-Pb年龄
- It intruded in Upper Ordovician Shifeng Formation and is dated as 333 86Ma of U Pb concordant age of zircon, which belongs to middle stage of Variscan. 岩体侵入上奥陶统石缝组（O3s） ， 岩体的锆石U?Pb 一致线年龄333－86 Ma， 属华力西中期。
- Minerals or altered minerals such as sericite, biotite and K feldspar in the altered wallrocks are selected to be objects of age determination, and the Ar Ar, K Ar, Rb Sr, U Pb isochron dating methods are adopted. 选用矿石或蚀变围岩中的绢云母、黑云母、钾长石等蚀变矿物作为测年对象 ,采用 Ar- Ar、 K- Ar法或 Rb- Sr等时线法测年在目前的技术条件下是经济可行的 ,关键是要保证被测矿物确为蚀变矿物并且纯度较高。 用 U- Pb法测定矿脉中的水热锆石来确定成矿年龄 ,但如何区分继承锆石和水热锆石尚不成熟。
- zircon U - Pb age 锆石U-Pb年龄
- He prefers to assort with people of his own age. 他更喜欢与自己的同龄人交往。
- Even the best quality rubber will perish with age. 就是最佳质量的橡胶也会因老化而腐烂。
- He come to the fore as a physicist at an early age. 他在早年就成了杰出的物理学家。
- The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- It was difficult to tell his exact age. 很难判断他到底多大岁数。
- The annular markings on a tree indicate its age. 树的环形纹理显示其年龄。
- single zircon U - Pb ages 颗粒锆石U-Pb年龄
- Age and wedlock we all desire and repent of. 成年与婚姻，均为我辈所欲，亦为我辈所悔。
- Her widowhood condemns her to a lonely old age. 守寡使她不得不过着孤独的晚年生活。
- I don't think he looks his age of seventy. 我感到他看起来不像70岁的人。
- He has always assorted with men of his age. 他总是与和他年令相仿的人交往。
- He's of an age when he ought to settle down. 他已经到了应该安顿下来的年龄了。
- Age stole onward and benumbed me more and more. 年纪渐老使得我(反应)越来越迟钝。
- The child is at an impressionable age. 这孩子正处于易受影响的年龄。
- The expedition suffered all the rigo(u)rs of a Canadian winter. 这支探险队饱受了加拿大严冬的折磨。
