例句與造句

1. For some heavier atoms such as iron and argon the principle isotope is not the lightest isotope.
2. The NRU is a world-renowned research facility, producing about 60 % of the world's supply of molybdenum-99, the principle isotope used for nuclear medical diagnosis.
3. It's difficult to find principle isotope in a sentence. 用principle isotope造句挺難的