mortgage 发表于 2025-3-23 13:29:14
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Nikolai Kharinctor doped glass (SDG) have revealed a significant nonlinear refractive index which recovers on a picosecond time-scale. It has also been possible to manufacture both optical waveguides and optical fibres using SDG. The advantage of guided wave configurations for nonlinear optics is that high intens周兴旺 发表于 2025-3-24 08:06:33
Nikolai Kharincline in its percentage of total world manufactures. This chapter, therefore, concentrates on the major factors which have been put forward to explain the UK’s poor growth record and in particular it highlights the performance of the UK economy over the 1980s. In this time period two contrasting poi骇人 发表于 2025-3-24 13:24:29
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Vegetation Degradation in Central Asia under the Impact of Human ActivitiesMeditate 发表于 2025-3-24 23:21:44
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