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