observe upon造句

例句与造句

1. the pinning of the surface fermi level at 0.29 ev above its initial value, equivalent to a variation of schottky baxrier height of 0.67 ev is observed upon deposition of ~ 0.6 ml er onto the clean p-type si ( 00l ) ( 2xl ) surface at room temperature
   通过对测得的硅和铒的芯能级和价带的分析，得到了以下结论：随着铒覆盖度的增加至约为06单层，表面fermi能级被钉扎在其初始值0
2. It's difficult to find observe upon in a sentence. 用observe upon造句挺难的