any of a series of radioactive elements with atomic numbers 89 through 103
Adjective:
having a radial form;
"starfish are actinoid--that is, they are radially symmetrical"
双语例句
1. The problem of collecting and delivery shunting of non-through wagon flow on the actinoid private line belongs to a kind of the combinatorial optimization problems.
放射形专用线非直达车流取送车问题属于一类组合优化问题，影响因素较多。
youdao
2. This review summaries the application of ion exchangers in the separation and determination of alkali metals, alkali-earth metals, noble metals, rare earth elements and actinoid.
3. This review summaries the application of ion exchangers in the separation and determination of alkali metals, alkali-earth metals, noble metals, rare earth elements and actinoid.
