查询词典 trace fossil

Recently, a nearly E-W-striking, over 10 km long albitite zone has been recognized for the first time in the Lower Silurian Meiziya Formation in a Lower Paleozoic lead-zinc ore deposit concentration area of the Xunyang basin, South Qinling. It shows a conformable contact and gradational relationships with the country rocks and has thick-bedded and massive, banded, brecciated structures and fine and very fine equigranular and intraclastic textures. It is chemically characterized by enrichment in SiO2, Al2O3 and Na2O and is rich in the trace elements Fe and Mn and poor in the trace elements Co, Ni and Cu. Its ∑REE, LREE and HREE are lower than those of the country rocks and exhibit pronounced Eu depletion.

最近，在南秦岭旬阳盆地下古生界铅锌矿集区内的志留系梅子垭组地层中首次识别出一条近东西方向延伸长达10余千米的钠长石沉积岩带，与地层整合产出，渐变过渡，厚层块状，条带状，角砾状构造，均粒微-细晶结构，内碎屑结构；其化学成分以富含SiO2，Al2O3及Na2O为特征，富Fe，Mn，贫Co，Ni，Cu等微量元素；该钠长石岩的∑REE，LREE，HREE均较围岩偏低，具明显Eu亏损的特征。

arsenic can effect the balance of trace elements in human's body and the u nba lance of trace elements may be one of the important mechanisms of arsenism.

砷可影响人体内微量元素的平衡，微量元素的失衡可能是砷毒作用的重要机制之一。

The results showed that,except for Ni in the seed, six trace elements existed in all the organs, including the young leaf, old leaf, stem, flesh, seed, stone and root, but the contents of these trace elements differed to some extent among different organs, trees or cultivars. The contents of Fe, Mn, Cu, Zn and Ni of all the organs in Canarium album Raeusch.

结果表明：除Ni在种子中未检出外，所测6个元素在橄榄新叶、老叶、茎、果肉、种子、果核、根等器官中均有一定的分布；各微量元素在不同器官、不同植株以及不同品种之间存在一定的差异。

Collagenase activity was defined as the radioactivity extractable by 50% dioxane. Clostridial collagenase was used as a standard. The lower limit of this assay method was 0.01 units of clostridial collagenase. Among 17 glaucoma eyes, 6 had trace collagenase activity (around 0.01 units) in aqueous humor; and for cataract eyes, 8 out of 27 had trace collagenase acitivty.

我们所采用之测量方法可侦测出约0.01单位以上的胶原酵素；一般前房液之胶原酵含量非常低，许多患者无法以我们之方法利得胶原酵素之存在：17位青光眼患者中，只有6位可於其前房液中到得约0.01单往之胶原酵素；27位白内障急者中，有8位可测得微量胶原酵素；二者在统计学上与太大差异存在。

In this research, we used Trifluoroacetic anhydride as a derivatizing agent to esterify the trace glycerol in biodiesel, followed by the determination of trace glycerol using microwave assisted headspace SPME extraction technique combined with GC-ECD.

本研究利用三氟醋酸酐与生质柴油中的微量甘油进行酯化反应，反应后的衍生物以本实验室开发的微波辅助顶空固相微萃取装置采样，并以气相层析仪搭配电子捕捉侦测器作分析。

The topologic architecture of metazoan trace fossils may be subdivided into 3 clusters, 8 basic topologic configurations, 3 combined topologic configurations and 21 topoichnologic kinds, which are considered to be related to ethologic classifications of trace fossils in origin.

后生动物遗迹的拓扑结构可归并为3 族、8 种基本拓扑型、3 种组合拓扑型和21 种拓扑遗迹类，它们与习性类有较好的成因联系。

The results revealed that all the trace-conditioned animals acquired the trace eyeblink CRs over 14 training days, however, none of the pseudo-conditioned animals did.

结果显示：a。通过14天的训练，条件反射组动物均建立了追踪性眨眼条件反应，而非配对组动物则没有建立该条件反应；b。

Furthermore, 23 of 40 single granule cells in the DG of learner animals exhibited heterogeneous activity patterns during the consolidation of trace eyeblink CRs such as increases in activities to the tone CS, trace interval or airpuff US.

齿状回颗粒细胞在追踪性眨眼条件反应的巩固过程中表现出不同的活动模式，如在声音条件刺激、间隔期或吹气非条件刺激出现后活动的增强。

The results suggested that the DG might participate in the neural circuit important for the consolidation of trace eyeblink CRs, and that the granule cells might encode different information during the consolidation of trace eyeblink CRs.

这些结果提示：齿状回可能参与巩固追踪性眨眼条件反应所需的神经环路，其颗粒细胞在追踪性眨眼条件反应巩固过程中可能编码不同的信息。

Guinea pigs (n=8) were trained on a trace eyeblink conditioning paradigm using a 200-ms tone conditioned stimulus, a 200-ms corneal airpuff unconditioned stimulus and a 600-ms trace interval.

条件反射组动物(n=8)首先接受200 ms声音条件刺激，间隔600ms后，再被给予200 ms吹气非条件刺激，多次重复配对，建立追踪性眨眼条件反应。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。