Birch Liquid Contained rich bioactive substances, multiple kinds of carbohydrate, more than 20 kinds of amino acids, and trace elements such as Si, Fe, Sr, ti, Ba and Cu etc.

桦树液中富含生物活性物质，含有多种碳水化合物、20多种氨基酸和微量元素硅、铁、锶、钛、钡、铜等。

youdao

Multiple logistic regression analyses were used to determine the association between usual number of hours of sleep during a 24-h period and si and SA (past 12 months and lifetime).

应用多元逻辑回归分析方法确定24小时的一个周期内常规睡眠的小时数与SI和SA(过去12个月和一生)之间的关系。

youdao

It is not an SI unit because it is not a multiple of 10 to the 3rd, but I like the angstrom.

它不是国际制单位，因为它不是,10的3次方进制，但我还是喜欢这个单位。

麻省理工公开课 - 固态化学导论课程节选