pe·ri·od·ic·i·ty /ˌpɪriəˈdɪsəti/
定期性,週期性,週期數
pe·ri·od·ic·i·ty /ˌpɪrɪəˈdɪsətɪ/ 名詞
週期(性),週期數,間歇性,循環性,頻率,周率
periodicity
週期性
periodicity
擬週期性
Pe·ri·o·dic·i·ty n.; pl. Periodicities The quality or state of being periodical, or regularly recurrent; as, the periodicity in the vital phenomena of plants.
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periodicity
n : the quality of recurring at intervals [syn: cyclicity]