fragment ions造句

例句与造句

1. The identification of the phenylethanoid glycosides in plant extract of cistanche deserticola was based on the comparison of molecular ions , and the fragment ions obtained by ms ( superscript n ) experiments with those of the authentic standards and the data was reported in the literatures
   通过得到的分子量和碎片信息并与标准化合物以及文献中的已知化合物比较，建立了这一类化合物快速鉴定的质谱新方法。
2. It's difficult to find fragment ions in a sentence. 用fragment ions造句挺难的