Used properly, sunscreens with an SPF of 8 or higher completely block UVB radiation and prevent synthesis of vitamin d.
使用得当的防晒系数为8或更高的防晒霜在完全阻挡紫外线辐射的同时也阻止了维生素d的合成。
2
The graduation synthesis topic link is a higher vocational education important constituent, is the higher occupation application technology talented person raise key practice link.
毕业综合课题环节是高职教育的一个重要组成部分，是高职应用性技术人才培养的关键实践环节。
3
In higher plants, the regulation of sucrose synthesis, transport and distribution represents a complex process.