n.循环性，周期性...

cyclicity的音标：cyclicity的英式发音音标为：[saɪ'klɪsɪtɪ]cyclicity的美式发音音标为：[saɪ'klɪsɪtɪ]...

Cambrian stratigraphy well developed in Luxi ( west of Shandong ), and their sedimentary records possesses cyclicity.鲁西地区寒武纪地层发育较好, 沉积记录具旋回性的特点....