periodic

US /ˌpɪr.iˈɑː.dɪk/
UK /ˌpɪr.iˈɑː.dɪk/
"periodic" picture
1.

周期性的, 定期的

appearing or occurring at intervals

:
The doctor recommended periodic check-ups.
医生建议进行定期检查。
We experience periodic power outages during storms.
我们在暴风雨期间会遇到周期性停电。
2.

周期性的

relating to or denoting a periodic table or the elements in it

:
The chemist studied the properties of elements using the periodic table.
化学家利用周期表研究元素的性质。
Understanding the periodic trends helps predict chemical behavior.
理解周期性趋势有助于预测化学行为。