R 英文名称： 7-Dehydrocholesterol 中文名称： 7-无水胆固醇 分 子 式： C27H44O 分 子 量：384.64 C A S： 434-16-2 英文名称： 1-Naphthaleneacetic acid
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7-DEHYDROCHOLESTEROL ACETATE 脱氢醋酸胆固醇
activated 7-dehydrocholesterol preparation 活化7
7-dehydrocholesterol reductase 脱氢胆固醇还原酶
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。
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。
First of all, the vitamin is not actually absorbed from the sunlight, but rather is made by the body when certain wavelengths of light activate a chemical called 7-dehydrocholesterol within the skin.
首先，其实人体并不能从日光中吸收维生素，而是特定波长的光(中波紫外线，UVB)可以激活皮肤内一种叫做7 -脱氢胆固醇的化学物。
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