查询词典 frontier

Yet the EU must also turn its attention to the bonfires on its eastern frontier.

欧盟还必须将注意力转向其东部边境的大火上。

Control the fortunes of three vastly different towns as they rise from the dust of the frontier and grow into thriving boomtowns.

控制的命运三截然不同的新市镇，因为他们从崛起的尘埃和前发展成为欣欣向荣的

On the basis of the Frontier Orbital Theory and three Bonding Principles, the possibility of reaction of active HOSA^- carbanion on polymerization process of MA by alkali catalyst and the mechanism of anionic polymerization of maleic anhydride were studied.

应用前线轨道理论和成键三原则研究了碱催化条件下马来酸酐均聚过程中α-羟基丁二酸酐碳阴离子活性中间体参与反应的可能性及其阴离子聚合机理。

Such cases as hydride ion transfer from reduced nicotinamide coenzymes or the carbanion generated by base abstraction of a substrate proton may lead to attack at the flavinN-5 positions; some nucleophiles, such as the hydrogen peroxide anion, are added on the C-4a position with its frontier orbital.

从减少烟酰胺辅酶或基片基抽象所产生的质子氢离子负离子转移这种情况可能会导致攻击的flavinN - 5的位置；例如过氧化氢负离子一些亲，被添加在C - 4A条位置其前线轨道

In the second part, quantum chemical AM1 methods were employedto theoretically investigate the electronic structures of maleic anhydride in ground- and excited-states. On basis of the frontier orbital theoryand three bonding principles, the possibility of reaction of active α-hydroxysuccinic anhydride carbanion and active α-hydroxy-succinic anhydride radical on polymerization process of MArespectively by alkali catalyst and by hydroxyl radical was discussed. Theanionic and radical polymerization of MA discussed also. Theoreticalstudies show that both polymerization products of MA are in the chainstructures, corresponding to the experimental findings.

第二部分用量子化学AM1方法，计算研究了马来酸酐的基态和激发态电子结构；应用前线轨道理论和成键三原则分别探讨了碱催化条件下和羟基自由基引发下马来酸酐均聚合过程中α-羟基丁二酸酐碳阴离子和α-羟基丁二酸酐碳自由基活性中间体参与反应的可能性及由它们引发的马来酸酐阴离子聚合反应机理和自由基引发聚合反应机理；理论研究表明马来酸酐的均聚合产物均为链式结构，与实验事实相相符。

One of his fellow churchmen, Samuel Andrews, was investing in oil refining; and this new frontier appealed to young John.

他的同伴 churchmen 之一，塞缪尔安德鲁，正在投资在精炼的油；而且这个新的边界诉诸年轻的约翰了。

It is over 250 years since Afghanistan was cobbled together, from many ethnic groups, and two centuries since British colonisers tried stretching their writ to India's (now Pakistan's) north-western frontier, where the plains crumple up towards the Hindu Kush.

自打阿富汗人从许多同文同种的民族拼凑到一起（系指1747年阿富汗王国的建立——译注），已经250多年了；而自英国殖民者试图将其政令扩展到印度的西北边境——此处的平原一直延伸到兴都库什山脉——以来，也已有两个世纪。

The seventh chapter, analyzes the effect different sorts of government debt policies chosen by different achievement-inclined deciders has on the frontier management of government debt scale, and comments on the performance of the sort of government debt policies in recent years.

第5章和第6章，主要以我国国债&赤字管理&制度安排下出现的国债预算&灰色&边界为突破口，研究我国政府预算行为，探索提高我国国债预算绩效和财政预算超收资金使用绩效的政策路径。

To pay off debts incurred during the war of independence, the infant American government tried to tax frontier distillers.

为了弥补独立战争带来的损失，年幼的美国政府试图对边界酒厂征税。

In our country, ecological economics is a young frontier science , which is beginning to attract more attention of economists and ecologists.

实践证明，我国的生态经济的失调现象是存在的，本文对我国生态经济学的研究对象、方法和任务进行了探讨。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。