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1·However, today there are some products on the market that have SPFs as high as 50.

然而，如今市场上有一些防晒霜产品的防日光系数高达50。《柯林斯英汉双解大词典》

2·Increasing the net income of farmers, rural employment and social and gender equity are core features of the SPFS.

增加农民净收入、乡村就业、社会公平和男女平等是特别计划的核心。

3·It is necessary to research a new method of SPFS preparation by solid reaction process with industrial scrap iron powder.

有必要探索由工业废铁粉经固相反应直接制取固体聚合硫酸铁的工艺。