Ray-casting algorithm is that ray passes volume cell of data field, sampling relative pels color to form video image.

光线投影算法将光线穿过数据场中的体元，采样得到相关象素的颜色， 形成可视图。

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The methodology adopted is to make relative questionnaire from cluster sampling of all 2008 graduates of the medical school.

方法：自行编制研究生满意度调查问卷，对某高校医学院2008届研究生进行整群抽样调查。

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But the maximum concentration of propylene during the sampling moment at the polypropylene dust sampling window exceeded 11 times relative standards.

但外操工在聚丙烯粉尘取样口取样瞬间工人操作位空气中丙烯最高浓度超过有关标准的职业接触限值11倍。

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This sampling helped to work out the distribution and mix of light wavelengths and their relative intensities found in a scene, said Mr Hunt.

BBC: Lens-less camera emerges from metamaterials work