这些课程介绍的是统计学理论的基础。These courses provide the groundwork of statistical theory.介绍的方式很重要.The manner of presentation is highly important.对于音乐爱好者来说,他是无须介绍的.He needs no introduction to the music loving public....
黄烷胶很重要,因为它比古尔胶在较高温度时更稳定.The xanthan gum is important because it has higher temperature stability than guar gum.合成16个黄烷酮 -7-O- 乙酸 、 乙酸酯 、 乙酰氨基酸和二肽衍生物.Sixteen flavanone - 7 - O - acetic acids, acetates, acetyl amino acidsa...