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Determining the content of trace elements and total flavonoids in Bupleurumprovided the basis for studying the relationship betweenthe function of trace elements and total flavonoids in medicine and curing respiratory diseases.

对中草药柴胡中微量元素和总黄酮含量进行测定，为研究药物中微量元素和总黄酮的作用及与治疗呼吸疾病的关系提供依据。

Applied widely in the data encryption, pseudorandom sequences can be generated not only by hardware but also by trace function, and it is found that the sequences generated by trace function are much better than those generated by hardware, especially in the aspects of correlation properties.

摘要伪随机序列被广泛应用于数据加密，它既能利用硬件产生，也可以利用有限域上的迹函数来生成，并且由后者生成的序列的密码特性远远优于前者，特别是在相关函数方面更是如此。

Basing on the separation of trace plutonium from uranium matrix,the operating parameters of MC-ICP-MS were studied and optimized for determining the isotope ratio of trace plutonium, such as the adjustment of resolution, selection of mode of ion extraction, elimination of background and interference, etc.

本工作在铀钚化学分离的基础上，对影响MC-ICP-MS法精确测量痕量钚同位素丰度比值的仪器条件进行了优化，研究了仪器分辨率、离子提取模式的选择、"背景和干扰"等参数的影响，探索研究了MC-ICP-MS上质量偏倚的校正方法。

Based on analysis of generation algorithms of cutter－ contact point trace in NC machining of sculptured surfaces,in this paper,a property on continuity of cutter－ contact point trace is suggested and proved.

在分析国内外关于自由曲面数控加工中刀位点轨迹生成算法的基础上，提出了一个关于刀触点轨迹连续性的命题并加以证明。

Achieved the true maxim power point trace of solar array by adapting an improvedMPPT control, which trace the load power instead of the power of solar array.

分析了发生孤岛效应的原因，采用了基于主动频率偏移方式实现孤岛效应防止。6。

A memory model describes, given a program and an execution trace of that program, whether the execution trace is a legal execution of the program.

内存模型描述给定程序的某个特定的执行轨迹是否是该程序的一个合法执行。

Taking Bendong and Xiqiu granitic bodies as an example, the thesis expounds geochemical characteristics of mantle-derived type granitoids in Sourthern China in REE and trace elements as follows: lower ∑REE, obvious fractionation of LREE and HREE, negative anomaly of Eu, relative higher ∑LREE/∑HREE,〓 and 〓 ratioes, rich in transitional elements and poor in large-ion lithophile and immobile elements compared with acidite means by Vinogradov. Original mantle-normalized distribution pattern of incompatible elements is one kind of rich -in-strongly incompatible elements type with enrich of K and loss of Sr, P, Ti and trace element association makes a feature of siderophile and chalcophile elements. The tectonomagmatic discriminating shows that mantle -derived granitoids in Southern China belong to orogenic granitoids formed in island arc/marginal sea basin system.

以本洞和西裘岩体为例，论文阐明了华南幔源型花岗岩稀土和微量元素地球化学特征，表现为稀土总量较低，轻重稀土元素分馏明显，负铕异常和∑LREE/∑HREE、〓、〓比值较高，与维氏酸性岩平均值相比华南幔源型花岗岩过渡族元素含量较高而大离子亲石元素和非活动性元素含量较低，不相容元素原始地幔标准化分配型式属强不相容元素富集型并呈K富集而Sr、P、Ti亏损的特点，微量元素组合以亲铁和亲铜元素为特征，构造岩浆判别显示华南幔源型花岗岩属造山花岗岩，其形成构造环境为岛弧/边缘海盆系统。

Among these are four axial bundles, a branch trace, a lateral and a median leaf trace diverge in acropetal sequence, repeated regularly at alternate nodes.

一个枝迹，一个侧生叶迹和一个中间叶迹分散在向顶的序列中，在连续的节上重复。

The albitite is characterized by enrichment of Na2O and SiO2 as well as trace elements suchas Au, As Sb,B and depletion of MgO, MnO,K,O and trace elements which include Cu, Ni,Co,Pband Zn.

钠长石岩富Na、St、Al、Mg、Mn、K，在微量元素方面富An、As、Sn、B、Cu、Ni、Co、Ph、Zn，稀土元素的含量较低，配分模式为平缓右倾曲线。

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。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了