Actinoid elements放射化学
actinoid d放射线状的
actinoid nuclei锕系元素核
actinoid contraction锕系元素收缩
Actinoid private line放射形专用线
Actinoid traffic lines放射形交通线
actinoid d contraction锕系元素收缩
同义词：actinideactinon
"starfish are actinoid--that is, they are radially symmetrical"
ADJ（形容词） having a radiate form, as a sea anemone or starfish 呈放射状的