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- This is by far the longest tree ring dating chronology in China, which can be used as a reference for ring-width dating for trees from the arid and semi-arid regions of Northwest China. 文章所建的树轮定年年表是国内目前最长的连续年表，它可为我国西北干旱-半干旱区树轮长序列的定年提供标尺。
- The second dating method was palaeo-magnetic analysis, or magnetic polarity stratigraphy. 第二种测定法是古磁学分析法，也叫磁极地层学测定法。
- The relationship between tree ring chronology and climatic factors was studied by correlation analysis. 利用相关分析的方法计算了年轮宽度指数和气候要素间的相关关系,发现5月份的降水与年表的相关最好。
- A 1 835 a tree-ring chronologies has been established based on tree ring samples from Dulan region, Qinghai. 根据青海都兰地区树木年轮样本建立了目前我国最长的年轮年表序列。
- Oh, red leaves, I've read your poetic message in the tree rings. 红叶,我在树木的年轮里读过你的文章。
- K Ar and Ar Ar dating is one of the best dating method to Mesozoic Cenozoic volcanic rocks. Appropriate size and preprocessing procedure are important for the method to get good data. K Ar和Ar Ar法是中、新生代火山岩最有效的测年方法之一 ,合适的粒度和有效的预处理程序对于提高年龄资料的质量至关重要。
- The tree ring sample, which was taken from Mount. Chinghai Nanshanof the Kilienshan region on May 30, 1976, belongs to Sabina przewalskiiKom. 本文采用的树木年轮标本;1976年5月30日采自祁连山地区青海南山;海拔3670米;它属祁连山园柏(Sabina przewalskii Kom.;)
- The 14C age dating method was applied to study the deposited age of the Jiangbei conglomerate in Youxi profile,Jiangjin. The geochemical characteristics of oxides such as MgO,CaO,Fe2O3,FeO,Fe2O3/FeO were analyzed. 本研究采用14C法对江津油溪剖面江北砾岩胶结年代进行测定;用滴定法和原子吸收光谱仪对填隙物的Fe2O3、FeO、CaO、MgO及Fe2O3/FeO变化特征进行了分析.
- It is important to reflect and analyze the environment by distilling the information of tree ring stable carbon isotope. 通过对树木年轮中稳定碳同位素信息的提取反映环境变化具有重要的理论和实际意义。
- The longer transportation distance of the fluvial deposits facilitates the bleaching and increases the reliability of the luminescence dating method, especially for the young material. 当然是愈是年轻的标本，较长的搬运距离愈是可以增加被晒退的机会，当然也会增加萤光定年法的可信度。
- This paper used tree ring analysis to study growth patterns of Castanopsis carlesii, Schima superha and Lithocarpus glaber. 摘要运用年轮解析技术对中国东部常绿阔叶林常见树种米槠、木荷和石栋的生长特征进行了研究。
- In practice,reaction extrusion is a new trend in the extrusion technology.The multiscrew extruder based on co rotating twin screw extruder is an up to date method. 在实验上，反应挤出技术代表了双螺杆挤出机开发的趋势，在此基础上的多螺杆技术是该领域的新发展。
- A substantial review on the results and application of the carbon isotope in tree ring to meteorology was presented,along with a prospective study in this filed. 对树木年轮碳同位素方法在气象中的应用及其成果作了综合评述，并对该领域目前存在的问题和前景作了一定的展望。
- The geologic dating methods, which include the paleontology method, archeomagnetism method, and isotopic method, present absolute ages or relative ages of geologic events. 前人已建立的地质定年方法(同位素法、古生物法和古地磁法)给出的是地质事件的“绝对年龄”或“相对年代”。
- The results indicated that tree ring chemistry of Masson pine could provide information concerning historical changes in soil and atmospheric heavy metals in the Delta. 马尾松年轮化学分析的结果能够提供珠三角地区重金属的历史变化信息。
- They can count back year by year the same way a forester reads tree rings. 他们可以倒着按年份数过去，就像看林人数树木的年轮一样。
- U-Pb and Pb-Pb dating methods have been used to determine the age of H8 dolomite in Bayan Obo Ore Deposit. 采用U Pb和Pb Pb方法研究了内蒙古白云鄂博赋矿H8白云岩的年代。
- The results of all these dating methods and fossil geochronometry should be contrasted each other. 与蛇绿岩形成、演化相关的各地质事件发生的时间可以对蛇绿岩的形成时代进行约束。
- Using radiometric dating methods, Sugden determined that the ash settled into the fissure after a volcanic eruption 8.1 million years ago. 使用放射性断代法，苏格丹发现火山灰早在810万年前的一次火山喷发后，就已进入了裂缝。
- Data available include: borehole data, climate forcing, corals, ice cores, insects, paleoclimate modelling, paleolimnology, paleoceanography, plant macrofossils, pollen and tree ring. 该往站的主站点在美国，还在南非、中国、阿根廷、肯尼亚、印度和法国设有镜像站点。
