Cholecalciferol is produced by irradiation of 7-dehydrocholesterol with ultraviolet light either from the sun or from an artificial source.
胆钙化是7?脱氢胆日光或人工来的紫外线照射而产的。
Cholecalciferol is produced by irradiation of 7-dehydrocholesterol with ultraviolet light either from the sun or from an artificial source.
胆钙化是7?脱氢胆日光或人工来的紫外线照射而产的。
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