例句與造句

1. The two elements are joined in a parent-daughter relationship by the alpha-decay of 147 Sm to 143 Nd with a half life of 1.06 years . 146 Sm is an almost-extinct nuclide which decays via alpha emission to produce 142 Nd, with a half-life of 1.08 years . 146 Sm is itself produced by the decay of 150 Gd via alpha-decay with a half-life of 1.79 years.
2. It's difficult to find extinct nuclide in a sentence. 用extinct nuclide造句挺難的