periodic
periodic
[ˌpɪərɪˈɒdɪk]
adjective
[ˌpɪərɪˈɒdɪk]
adjective
- appearing or occurring at intervals
间歇的；周期（性）的；时而出现（或发生）的
the periodic visits she made to her father.
她对她父亲的定期探望。 - (Chemistry)relating to the periodic table of the elements or the pattern of chemical properties which underlies it
(化)元素周期表的；（周期表中）元素化学性能变化周期的
the periodic law.
周期律。 - of or relating to a rhetorical period
完整句的。 见 period (义项6)
- mid 17th cent.: from French périodique, or via Latin from Greek periodikos 'coming round at intervals', from periodos (see period)
考试词汇表
