even isotope
even isotope 双语例句
From the analysis of the magnetic susceptibility, TOC, TN, pigment, organic car-bon isotope, HI, saturated hydrocarbon and 14C dating etc. of the sediment samples from coresof two boreholes in the Taihu lake, a knowledge of the evolution of paleoenvironment of thelake during the last 14ka is achieved. The results show that the lake has undergone the fol-lowing stages.. The Lake was at a low level, or even became exposed during 14.3-13.3kaBP, reflecting an arid climate. There existed a transitional stage during 13.3-12.4kaBP, the climate being slightly warm and wet. There are indications of a cold and dry climate around 11.5kaBP, probably corresponding to the Younger Drays event, comparable with other areas in east China.
本文根据东西太湖短柱岩芯的沉积物的物理、化学、生物指标的综合分析，讨论了该区距今14ka来的古气候变化过程，结果表明14.3-13.3kaBP，太湖水位低，环境指标甚至表现为暴露特征，反映了气候干旱：13.3-12.4kaBP，为偏暖湿的过渡阶段；该孔柱270-280cm(11.5kaBP左右)各类指标均明显更映冷干特征，可能是Younger Drays事件的记录，与我国东部其它地区有可比性；约10.9-10kaBP，这一时期是整个研究时段内一个较显著的温暖期。
Even Francium's most stable isotope, Francium-223 only has a half-life of 22 minutes.
钫的最稳定的同位素，钫-223也只有22分钟的半衰期。
Even Francium's most stable isotope, Francium-223 only has a half-life of22 minutes.
钫的最稳定的同位素，钫-223也只有22分钟的半衰期。
Vitrinite and desmocollinite have a relatively low potential of hydrocarbon generation. The stable carbon isotope composition of their pyrolysis oils is heavier than that of sporinite, cutinite and oils derived from coal-bearing strata. It seems that they cannot be major macerals to generate oil, even if they occupy a majority of proportion in the organic matter of coal and coaly shale, and that they can be good gas-prone macerals at the stage of high-maturity to over-maturity.
镜质体和基质镜质体的生油潜力相对较低，其生成的液态烃类的碳同位素组成比一般煤系原油重得多，而且这些组分本身对液态烃具有较强的吸附力，尽管其在煤系有机质中所占的比例很大，仍然难以成为生成液态石油的主要显微组分，只能在高成熟演化阶段成为良好的生气显微组分。
The coincidence count of the spontaneous neutron of even mass Pu isotope was measured with a high level neutron coincidence counter. The total Pu in material is calculated out in term of the effective 240 Pu mass and Pu isotope composition.
采用高计数率符合中子计数器测量材料中的240Pu等核素自发裂变产生的裂变中子，通过计算等效240Pu量来确定材料中的总含Pu量。
This paper determines the complicated sequence of the early Triassic Period faults in West Sichuan by the methods of fracture filling, carbon-oxygen isotope, sound emission, even temperature determination of wrap, etc, and studies the matching relation between the sequence and the oilgas evolution.
本文用裂缝充填物、碳氧同位素、声发射、包体均一温度测定等方法确定川西拗陷上三叠统断层形成期次，研究其与油气演化的匹配关系；
even isotope
相关单词辨析
这组词都有“平的，平坦的”的意思，其区别是：
smooth: 侧重指表面十分平滑，无任何粗糙的感觉。引申作圆滑解。
level: 强调没有高低之处，且在同一水平面，可引申指才能相等或与相邻某物平行。
flat: 指光滑平整的表面，但不一定是水平的。
even: 通常指平面上的各点或一条直线的各点处在同一平面或直线上。