复合的

The photocycloaddition of 1-naphthonitrile (1-NpCN) and 2,3-dimethyl-2-butene in cyclohexane or benzene gave cyclobutane 3 primarily,but that of 2-NpCN gave azetine 6 asthe major and cyclobutane 5 as the minor product in low conversion photolysis.

在低转化光解情况下，1-萘甲腈(1-NpCN)和2，3-二甲基丁烯-2在环已烷或苯中的光环加成反应主要得到环丁烷3，但2-NpCN主要得到氮杂环丁烯6和少量的环丁烷5，三氟醋酸量增加抑制1-NpCN和DMB的光环加成反应，表明TFA与基态及单激发态1-NpCN生成非光反应的复合物，它也淬灭(1-NpCN-DMB)激基复合物。

The photocycloaddn. of 1-naphthonitrile (1-NpCN) and 2,3-dimethyl-2-butene in cyclohexane or benzene gave cyclobutane I primarily, but that of 2-NpCN gave azetine II as the major and cyclobutane III as the minor product in low conversion photolysis. The photocycloaddn. of 1-NpCN with DMB is retarded by increasing amts. of trifluoroacetic acid which is shown to form non-photoreactive complexes with ground state as well as with singlet excited state 1-NpCN. It also quenches the *(1-NpCN-DMB) exciplex.

在低转光解情况下，1-萘甲腈(1-NpCN)和2，3-二甲基丁烯-2在环已烷或苯中的光环加成反应主要得到环丁烷3，但2-NpCN主要得到氨杂环丁烯6和少量的环丁烷5，三氟醋酸量增加抑制1-NpCN和DMB的光环加成反应，表明TFA与基态及单激发态1-NpCN生成非光反应的复合物，它也淬灭^*(1-NpCN-DMB)激基复合物。

Nano particle after being dispersed fully is added into A1, TiO2 and C powder in the suspension, and through fully mixing and combusting composition, loose blank of nano composite Al2O3-TiC base ceramic is obtained; and the blank is crushed, ball milled and hot pressed to densify, nano composite Al2O3-TiC base ceramic is obtained, which ontains Al2O3 40-55 wt%, TiC 25-48 wt%, nano phase 0.1-25 wt% and sintering assistant 0-2 wt%.

以重量百分比计，将纳米粒子充分分散后，以悬浮液的形式加入Al、TiO2、C粉末中，经充分混合后进行燃烧合成，得到Al2O3－TiC基纳米复合陶瓷的疏松坯体；将燃烧合成所得的坯体破碎、球磨后，进行热压致密化处理，制得含有三氧化二铝40.0－55.0％，碳化钛25.0－48.0％，纳米相0.1－25.0％，烧结助剂0－2.0％的Al2O3－TiC基纳米复合陶瓷材料。

In this thesis, inorganic ions were assembled to films by the interactions of the ions with functional groups of the polyelectrolyte, and then inorganic nanoparticles/polyelectrolyte composites films were prepared through chemical reaction. The properties and application of the films in electrocatalysis were studied.

本论文利用无机离子与聚电解质功能基团间的相互作用，用层层自组装的方法将无机离子组装到膜中，然后通过化学反应制备无机纳米粒子/聚电解质复合膜，考察了复合膜的性质及在电催化方面的应用。

Methods:The great adductor muscle tendon and bone and skin comound flaps pedicled with the descending genicular artery were used to repair the Achilles tendon accompanying with defect of skin and calcaneus at one-stage operation.

受此启发，我们在48侧经动脉灌注红色乳胶的下肢标本上，对膝降动脉的起源、走行、分支和分布，以及大收肌腱的形态进行了解剖学研究，并在4侧新鲜标本上施行摹拟手术实验，设计、创用了以膝降血管为蒂的大收肌腱、骨、皮复合瓣修复跟腱复合组织缺损。

The XRD studies show obvious diffraction peaks associated with graphitic carbon and Co metal. Co particles in the composite are stable even at 2500℃ in inert atmosphere .

复合微球的 X 衍射图显示出明显的石墨碳和金属钴的衍射峰，2500℃石墨化后，复合微球中的钴仍能稳定存在。

Telomere, a complex structure present at the ends of eukaryotic chromosomes, consists of tandam arrays of highly conserved hexameric repeats in vetebrates. Its function is to protect DNA from degradation of deleterious recombination.

端粒是由许多简单重复序列及相关蛋白组成的染色体末端复合结构，端粒酶是具有逆转录酶特性的核糖核蛋白复合物，能以自身的RNA为模板合成端粒重复序列，加至新合成的DNA链末端，维持端粒平衡从而保证染色体末端结构完整性及解决末端复制问题。

Based on the analysis of the above problems, and an in-depth exploration into the linguistic facts of both english and chinese, a new concept of ideational focus is proposed, which is believed to be capable of interpreting all the n1+n2 compound instances in both english and chinese.

在以上分析的基础上，结合汉英复合名词的语言实际，本文提出一个意念焦点的概念，用来对英汉语复合名词进行统一的阐释。

Objective To evaluate potential of collagen sustained release recombinant human bone morphogenic protein-2 (rhBMP-2) composed with coral and bone mesenchymal stem cells in repair of cranial defect aiming to clarify the origin of new bone after defect repair by such tissue-engineered bone.

目的观察以胶原缓释重组人骨形态发生蛋白-2(rhBMP-2)复合骨髓间充质干细胞及珊瑚构建的组织工程骨修复颅骨缺损的能力，明确复合BMSCs的组织工程骨修复颅骨缺损后新骨的来源。

CdSe nanoclusters were overcoated with CdS shell in aqueous medium, which resulted in elimination of deep defects on surface of nanoparticles and thus large increase of the emission intensity of CdSe nanoclusters.(4) Based on PL emission and excitation results and the theoretical calculation on fine structure of bandedge exciton, a model of formation of excimer within the small clusters was proposed to explain the large Stokes shift of luminescence from absorption edge observed in PL results.

有机包覆剂虽然可以控制颗粒的长大，但无法同时消除由Ⅱ族和Ⅵ族两种元素的悬挂键在表面形成的无辐射复合缺陷中心，本文实现了在水溶胶中将宽带隙CdS半导体材料外延生长在CdSe纳米颗粒表面，有效的消除了无辐射复合缺陷中心，使得样品在室温就可以测到带边发光。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐