中性碎片 meaning in English

neutral fragment

Some of the molecular ions fragment into smaller daughter ions and neutral fragments .
有些分子离子断裂成为较小的子离子和中性碎片。
( 3 ) the possible mechanism of dissociation / ionization is analyzed . it can be concleded that the main dissociation channel is resonant photoionization of parent molecule followed by photodissociation of parent ion and the further photodissociation or photoionization of the fragments
( 4 )分析结果表明二硫化碳分子的主要解离通道为:二硫化碳分子( 2 + l )咫mpi ，然后解离为碎片离子或中性碎片，解离碎片进一步解离或电离。
The structures of phenylethanoid glycosides in plant extract of cistanches deserticola were successfully analyzed and identified by electrospray ionization multi - stage mass spectrometry ( esi - ms ( superscript n ) ) in negative mode , some interesting neutral losses were found , which helped us to confirm the structures of compounds without tedious separation and purification procedures , then the fragmentation mechanisms were explored
摘要采用电喷雾多级串联质谱技术，对肉苁蓉药材粗提物中的苯乙醇苷类化合物的特征质谱行为进行了系统研究，根据一些特征的中性碎片丢失，提出了该类化合物的质谱裂解规律。