基于流变学原理和质量传递原理的分析，建立了一个能够描述渐变型聚合物光纤(GI POF)共挤扩散制备过程的数学模型。
Based on an analysis of rheology and mass transport principle, a mathematical model was formulated for describing the co-extrusion and diffusion process of graded index polymer optical fiber (GI POF).
当你睡眠逐渐变短，上一条提到的睡眠质量就变得至关重要，只有提高睡眠质量才能补偿你因为少睡带来的健康上的影响。
As you start sleeping less and less, it's crucial to remember and follow the first rule about quality sleep. This is your only way to compensate for less sleep.
提出并优化了由单排渐变介质波导构成的二维空气孔型光子晶体负折射平板透镜表面的减反层，改善了成像质量。
We propose and optimize the antireflection coating composed of a row of tapered dielectric waveguides for two-dimensional air hole-type photonic crystal negative refraction slab lens.
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