quadravalent造句

例句与造句

1. It has a spinel-like structure similar to magnetite but uses one quadravalent and two divalent cations M 2 + 2 M + 4 O 4 instead of two trivalent and one divalent cations.
2. :The urine studies taking place fifteen years after exposure assume that some uranium has remained undisolved as quadravalent ceramic UO 2 particles, because other tissues don't retain as much U-238 as the particulate inhalation exposure victims have in their lungs.
3. It's difficult to find quadravalent in a sentence. 用quadravalent造句挺难的