secular非: mistake; wrong; errors周期性: periodicity; cyclicity非周期性: aperiodicity; non-periodicity; secular非周期性摆: aperiodic pendulum非周期性的: acyclic; aperiodic aerial; no eriodic; non periodical; noncyclic; non-periodic下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:长期性；非周期性，即可在微信中查询翻译
