【求助】几个句子如何翻译？谢谢！

1 Electron trapping site
电子诱捕单元
2 The preparation of polynuclear complexes having predictable linear structures in which there are no problems with geometric and optical isomerism of the highly symmetric metal comples fragments.
多核联合体的制备有着其可预知的线形结构，在此结构里能够知道它的几何结构以及高对称性的光学异构体.
3 The complexes more often than not are stable in more than one accessible oxidation.
这种合成体通常不够稳定，极易被氧化..

后面两个句子看的我头大，1楼能解释下吗？

1 Electron trapping site
电子捕获点（位点）