查询词典 excellence

U Transpacific Certifications Limited is a fast growing certification body possessing highly skilled and experienced human resources dedicated to provide quality services to our clients for achieving excellence in business.

泛太平洋认证有限公司是一家快速成长的认证机构，致力于为企业实现卓越优质的服务，我们有高度熟练，经验丰富的人力资源。

That way you encourage them to touch the ball more, enjoy the game more and what we say have 'uncoached excellence'.

要鼓励他们更多地接触球，更多地享受比赛。这就是我们所说的&非教练的卓越&。

IBM Corporation – IBM and Sybase share a vision to deliver open solutions with uncompromised performance and excellence to mutual clients.

国际商用机器公司IBM公司和Sybase共同的抱负，提供开放的解决方案与妥协的性能和优异的共同客户。

Are you doing something of such excellence that if your company went away it would leave an unfillable hole?

你做的事是否有这么大的价值？

Are you doing something of such excellence that if your company went away it would leave an unfillable hole?

比如说，你的公司一旦退出是否会留下无法填补的空白？

With the support of a major research grant of Zhejiang Province (No. 001101027) and the Plan of Promoting Education of Excellence of Zhejiang University in the 21st Century, this dissertation is devoted to address the above problems and fabricate an L-band EDFA with low cost, high performance and technological innovation.First the mechanism of an erbium doped fiber amplifier is introduced. Various theoretical models based on classical rate propagation equations are summarized and compared for their applications. We use a modified numerical model based on the Giles model, which agrees with the experimental results well. This serves as the theoretical base for the whole thesis and will be used to optimize the characteristics of EDFAs. A novel method based on a map of noise figure and gain is proposed to analyze efficiently the dependence of the noise figure and gain for EDFAs on the EDF length and the pump power. The characteristics of various EDFAs are studied and compared.Secondly, some important parameters are introduced to describe the characteristics of EDFAs. The methods and the experimental setups for measuring the gain and noise figure of an EDFA are emphasized. We introduce how to measure the characteristics of each component of an EDFA, especially the gain and absorption coefficient of an erbium doped fiber.Thirdly, four types of simple and novel L-band EDFA structures with low noise, high gain and low gain ripple are proposed to satisfy the requirement of a DWDM system. They can be classified into two categories. In the first category, a single ASE pumping is served asa secondary pump. This category includes the following three types. Type: a new construction using a fiber Bragg grating in an unpumped EDF section at the input side. Type: a new structure of L-Band EDFA with two-stage pumps, which utilizes the forward ASE as a second pump.

本论文本着科技创新、服务于生产实践的精神，以设计价格低廉，性能优越、结构合理简单的L-band EDFA为目标，依托浙江省科技厅重大科学基金资助项目(001101027)和浙江大学振兴教育计划资助的全光网络的搭建—《光通信技术》课程实验建设项目，展开了如下工作：首先，介绍了掺铒光纤放大器的工作原理，归纳总结了基于速率方程基础的EDFA的各种理论模型，分析比较了各个模型的特点和适用场合，最终选择完善的Giles理论模型作为本论文分析设计EDFA的理论基础；针对实际实验条件提出了修正的EDFA模型的数值计算方法；创新地提出了增益—噪声系数全局分析法，直观有效地分析了EDFA的增益和噪声系数与掺铒光纤长度和泵浦功率的依赖关系，并对各种EDFA的性能作了全面的比较；第二，介绍了掺铒光纤放大器特性参数的定义与测量方法，重点介绍了噪声系数和增益系数的测量方法及实验装置；介绍了组成掺铒光纤放大器各组件的特性测量方法，重点介绍了测量掺铒光纤参数的方法和实验装置；第三，针对WDM系统对L-band EDFA谱平坦、低噪声、高增益的要求，我们创新地提出了四种不同的L-band EDFA结构，按设计思路可以分为两大类：一类是基于单抽运二级泵浦法，这一类包括在未泵浦掺铒光纤的输入端插入一根布拉格光纤光栅的两段L-band的EDFA的新结构；基于前向ASE光作为二级泵浦源推动下一级EDF工作的泵浦分配、两段级联L-band的EDFA的新结构；基于单根光纤光栅、泵浦分配、两段级联的EDFA；另一类则是基于同时应用前后向C-band ASE作二级泵浦源的双抽运法，如基于前后向ASE光作为二级泵浦源的三段级联L-band的EDFA的新结构。

Pound's excellence was unsurpassable in his time.

Pound的出色在他那个时代是无人企及的。

The team at shlws is committed to providing innovative products unsurpassable in quality and excellence, for all our manufacturing plants are iso9001:2000 certified.

为了保持和开拓本公司产品在国内外市场竞争力，上海里万严格按照国际iso9001：2000标准的要求，实施公司内部各项管理体系的活动。

"As a global centre of excellence in ocean, earth and atmospheric sciences, this generous gift will help take the University of Victoria's scientific research to an even higher level," said UVic President David Turpin.

作为一个社会团体，也作为一个国家，我们有责任为这项实实在在的科学研究投入切实的资金支持，从而保证我们的后代拥有安全的生存环境。

"As a global centre of excellence in ocean, earth and atmospheric sciences, this generous gift will help take the University of Victoria's scientific research to an even higher level," said UVic President David Turpin.

赖特总裁认为这笔奖学金可以帮助更多的学生接受维多利亚大学的优质教育，&我们公司招聘了不少维多利亚大学的毕业生，我非常欣赏贵校的教育质量。&

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。