Cholecalciferol is produced by irradiation of 7-dehydrocholesterol with ultraviolet light either from the sun or from an artificial source.

胆钙化醇是7脱氢胆固醇经日光或人工来源的紫外线照射而产生的。

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We propose a numerical method using boundary element to model the electromagnetic filed induced by artificial source in the frequency domain with 3-D topography.

提出了一种用边界元法计算频率域人工源三维地形电磁场的数值模拟方法。

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Just as he did with a previous artificial brain model, Yamazaki plans to release the source code for the system.

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Beach nourishment: artificial process of replenishing a beach with material from another source that lies either inland or is dredged offshore.

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Should we rely on the artificial intelligence at Google to sort through the day's news and promote stories based on the rank of the source, how many people are linking to it and other mathematically defined attributes?

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