年代序列 meaning in English
chronosequence
Examples
- A time scale of the sample sn has been reconstructed by a polynomial fitting with 9 dated ages and further tested by annual band counting results . in general , the fitting polynomial line is consistent with the annual band growth rate except for that the bottom part of the stalagmite ( a height between 196 to 255mm from the top )
石笋sn通过9个~ ( 230 ) th年龄的多项式拟合建立年代序列，利用清晰可数年层段检验表明，除底部( > 196mm )外其它时段基本吻合； bf1结合~ ( 230 ) th年龄和年层计数法定年，年层计数结果表明定年在测年误差范围之内。 - In order to elaborate the app licability of osl to loess , especially single aliquot regenerative protocol ( sar ) , involving stimulation of the same disc with an infra - red laser diode followed by blue leds to polymineralic fine - grains of loess , such explanations as light bleaching , preheat , anomalous fading , prior - ir exposure were investigated in this paper . for drawing adequate coarse grains from loess , quartz and feldspars , as well as loess , were etched by hydrofluoric acid and fluorosilicic acid . the sequence of ages of holocene loess in weihe rivier basin has been established by single - aliquot ( sar ) and multiple - aliquot using fine - grains and sar using coarse - grains
本文通过渭河流域全新世黄土的光晒退实验，地表黄土样品的d _ e值测定，细颗粒单片的预热、反常衰退、红外暴露实验，说明释光测年在全新世黄土中应用的可行性及单片再生剂量法( sar )在黄土细颗粒中的适用性；为了从黄土中分离出足够的粗颗粒，进行了纯石英和长石的氢氟酸( hf )和氟硅酸( h _ 2sif _ 6 )溶蚀实验，黄土粗颗粒石英溶蚀分离实验；通过细颗粒单片、多片的blsl 、 irsl和post - irosl ，热释光，及粗颗粒石英的blsl的年代测定，选择适于全新世黄土的释光测年方法，并建立了渭河流域全新世黄土的年代序列。