例句與造句

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
   通過得到的分子量和碎片信息并與標準化合物以及文獻中的已知化合物比較，建立了這一類化合物快速鑒定的質(zhì)譜新方法。
2. It's difficult to find fragment ions in a sentence. 用fragment ions造句挺難的