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中国自然科学基金
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  “中国自然科学基金”译为未确定词的双语例句
     A 40 Gb/s optical transmission based on th e NSFCNet 400 km×10 Gb/s system is realized without any bit error rate (BER) floo r. It is shown that typical 10 Gb/s systems of middle or short distance can be u pgraded to 40 Gb/s directly without change the transmission links.
     基于中国自然科学基金网(NSFCNet)的400 km×10 Gb/s光传输链路实现了40 Gb/s光传输,没有出现误码率(BER)平台,说明在常规的中短距离10 Gb/s系统可以直接升级至40 Gb/s系统,而不需要升级传输链路。
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     CARRYING FORWARD ACHIEVEMENTS TO MAKE PERFECT THE SCIENCE FOUNDATION SYSTEM WITH CHINESE CHARACTERISTICS—CELEBRATION OF THE DECADE OF SCIENCE FOUNDATION IN CHINA
     发扬成绩,完善有中国特色的科学基金制——祝贺中国自然科学基金设立10周年
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     CONGRATULATIONS AND EXPECTATION-CELEBRATING 10TH ANNIVERSARY OF NSFC
     祝贺与期望——庆祝中国自然科学基金设立10周年
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     Difficulties in China's Natural Science Fund
     试析中国自然科学基金的困扰
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     NSFC Strategy on Funding Global Change Programs with the Special Reference of GLOBEC
     中国自然科学基金委员会资助全球气候变化和全球海洋生态动力学的战略(英文)
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     NATIONAL NATURAL SCIENCE FOUNDATION OF CHINA
     中国国家自然科学基金委员会
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     Difficulties in China's Natural Science Fund
     试析中国自然科学基金的困扰
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     NATIONAL NATURAL SICNECE FOUNDATION AND LANDSCAPE ECOLOGY IN CHINA
     国家自然科学基金中国的景观生态学
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     On Mutul Fund Markets in China
     中国投资基金市场
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     New Deal of Natural Science Fund
     山东自然科学基金"新政"
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Appraisal by colleagues of the same field is an effective and fair method used in the work of scientific research. This method is extensively adopted as an auxiliary means of decision making by science foundation organizations and institutes in various countries in selecting their supported reseach projects from colleges and research institutes. In the course of adopting this method, however, some shotcomings have been exposed. If these are not dealt with properly and timely, their development will create contradictions...

Appraisal by colleagues of the same field is an effective and fair method used in the work of scientific research. This method is extensively adopted as an auxiliary means of decision making by science foundation organizations and institutes in various countries in selecting their supported reseach projects from colleges and research institutes. In the course of adopting this method, however, some shotcomings have been exposed. If these are not dealt with properly and timely, their development will create contradictions in the fields of science and technology. The study of appraising soft scientific topics is of practical significance in the growth and improvement of Chinese science foundations and the progress of science in China.

同行评议是在科学研究领域进行评估活动有效而公正的一种方法。作为辅助决策手段,各国的科学基金组织或机构广泛使用同行评议,选择支持高等院校和研究所的研究项目。然而,在同行评议的实施过程中,确实暴露了一些不足之处,如处理不当或不及时,将会导致其固有缺陷的扩大化,引发科技界的矛盾。开展同行评议软课题研究,对中国自然科学基金事业的发展和完善,促进中国科学事业的进步都有重要的现实意义。

A 40 Gb/s optical transmission based on th e NSFCNet 400 km×10 Gb/s system is realized without any bit error rate (BER) floo r. It is shown that typical 10 Gb/s systems of middle or short distance can be u pgraded to 40 Gb/s directly without change the transmission links. However, the chromatic dispersion must be compensated precisely when the system upgrades, because the dispersion tolerance of 40 Gb/s systems is much lower than that of 10 Gb/s system. Meanwhile, the influence of the optical power...

A 40 Gb/s optical transmission based on th e NSFCNet 400 km×10 Gb/s system is realized without any bit error rate (BER) floo r. It is shown that typical 10 Gb/s systems of middle or short distance can be u pgraded to 40 Gb/s directly without change the transmission links. However, the chromatic dispersion must be compensated precisely when the system upgrades, because the dispersion tolerance of 40 Gb/s systems is much lower than that of 10 Gb/s system. Meanwhile, the influence of the optical power injected i nto the fiber links is also investigated. The results show that the effect of th e fiber nonlinearity must be considered as well as the improvement of optical si gnal to noise ratio (OSNR) due to the enlarged signal bandwidth when the bit rat e of transmission system is upgraded from 10 Gb/s to 40 Gb/s.

基于中国自然科学基金网(NSFCNet)的400 km×10 Gb/s光传输链路实现了40 Gb/s光传输,没有出现误码率(BER)平台,说明在常规的中短距离10 Gb/s系统可以直接升级至40 Gb/s系统,而不需要升级传输链路。但是,由于相对10 Gb/s系统而言40 Gb/s系统的色散容限非常小,在升级时必须精确补偿原有链路的色散,在接收机前一般需要加可调色散补偿单元。同时,还分析了光纤注入功率对系统性能的影响,结果表明在设计这种由10 Gb/s向40 Gb/s升级的系统时,不仅要考虑信号带宽增加带来信噪比要求的提高,而且必须充分考虑光纤非线性的影响。

 
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