查询词典 customs bond

Three part of research works had been carried out in the dissertation. The first part: a kind of multidentate amine modified silica gel was synthesized through the following steps:(1) introduce the amino groups onto the surface of silica-gel by the treatment of surface silanol groups withγ-aminopropyl trimethoxy silane;(2) michael addition of excess trihydroxymethyl propyl triacrylate to amino groups on the silica gel surface;(3) amidation of the unreacted double bonds of TMPTA on the surface of TMPTA modified silica gel with diethylenetriamine;(4) the multidentate amine modified silica gel was finally obtained by the reaction of amino groups on the surface of DETA modified silica gel with double bond of butyl acrylate.

本论文进行了三部分研究工作，第一部分：通过多步反应对硅胶进行改性合成了一种多齿胺改性硅胶配体，合成过程如下：1通过γ-氨丙基三甲氧基硅烷与硅胶表面的硅羟基反应，使硅胶表面带有氨基；2利用硅胶表面氨基与过量的三羟甲基丙烷三丙烯酸酯发生Michael加成反应；3利用二乙烯三胺与TMPTA改性硅胶表面未反应的双键发生反应使硅胶表面氨基化；4最后用丙烯酸正丁酯与DETA改性硅胶表面氨基充分反应成功合多齿胺改性硅胶配体。

That case was first brought in 2007 by trustees for three pension sponsors Unisystems, Nashua Corp and the Andover Companies who accuse SSgA of breaching its fiduciary duties under the Employee Retirement Income Security Act by allegedly mismanaging certain bond funds and misrepresenting their risk.

三家养老金赞助商--优利系统公司、Nashua Corp和Andover Companies--的受托人最初于2007年提起诉讼，指控道富环球对某些债券基金管理失当且未如实说明风险，违背了《雇员退休收入保障法案》规定的受托责任。

The bond between Amy and Nickie is immediate and uncanny.

将Amy与Nickie联结在一起的纽带是紧密却又离奇的。

In this paper, the electrostatic potentials at the midpoint of C-NO2 bond and the net electric charge on every element in nitrobenzene derivatives, nitrotoluene derivatives, nitrophenol derivatives and nitroaniline derivatives were calculated using ab initio.

根据分子结构、静电势最大值、实验撞击感度及分子中各元素所带的净电荷，对影响炸药感度的因素及DATB和TATB的特殊稳定性进行了分析。通过分析，我们发现，影响上述炸药撞击感度的因素主要有硝基、甲基、羟基和胺基。

Once the bond has been broken, the individual particles become a part of the noncohesive population.

一旦粘结破裂，单个的颗粒就变成非粘性总体的一部分。

Only when the outer electrons forming dangling bonds absorb noncontiguous specific energy and transit into relative free status, can they bond with each other, that is, only when C atom in 3DB status takes in enough energy and conquers potential barrier can it realize reconstruction.

构成悬挂键的外层电子只有吸收非连续的特定能量跃迁成相对自由状态才可能彼此成键，即处于3DB状态的C原子吸收足够能量克服势垒才能实现重构。

More relationship-based systems, such as those in Europe and Japan, have relatively smaller nonfinancial corporate bond markets and larger stocks of loans.

各种更多地以关系为基础的体制，诸如欧洲和日本的体制，都拥有规模较小的非金融公司债券市场和较大的贷款额。

Some further approximations lead to a simple formula that expresses the barrier for nonidentity and identity hydrogen abstraction reactions as a function of the bond strengths of reactants and products.

第八章利用从头算价键计算方法结合价态相关图模型研究了卤族非等同氢提取反应，并对此类非等同氢提取反应做了归纳，推导出描述此类化学反应的能垒的普适半经验公式。

During this period nontrade creditors, like bank debt and bond holders, languish in uncertainty as to what will happen to their investment.

在此期间﹐无权参与交易的债权人﹐如银行债券的持有者会对他们的投资所存在的不确定性感到心力交瘁。

Olefine, electrophilic or nucleophilic substitution of arenes, nucleophilic addition of carbonyl compounds stereochemistry in elimination reaction of double bond forming and the choosing of oxidants and reducing agents in redox system.

在化学反应方面重点是烯烃的亲电加成，芳香烃的亲电，亲核取代，羰基化合物的亲核加成，消除反应的双键定位和立体化学，氧化，还原反应中氧化还原剂的选择。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。