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。
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。
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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