A near diffraction limited beam was produced from the amplifier with quasi-single mode output... the results shows that the high pulse energy fiber laser has advantage of simple all fiber structure.

输出的光束质量较好，为准单模输出。该光纤放大器输出脉冲能量高，具有全光纤化、结构简单的特点。

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In this paper, the symmetric image encryption scheme based on 3-d quasi-affine transformation over limited integer grids and 4-d chaotic map.

本文基于三维整数拟仿射变换和四维混沌系统对图像加密。

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The book ranges widely: from a quasi-Malthusian discussion of the impact of limited resources to the more familiar territory of how wage competition from emerging economies influences income inequality.

ECONOMIST: The rise of emerging markets: Be worried | The

The Greens held on to third place in Germany, but at EU level the movement remains limited by its internal incoherence: some Euro-Greens are quasi-liberals, others are allied with the extreme left.

ECONOMIST: The European elections