cycle: n.1.循环,周期,一转。2.周时,周年,年纪。3.(诗、故事等的)始末。4.自行车,三轮车,摩托车。5.【电学】周波;【数学】环;【拓】闭链;【地质学;地理学】旋徊;【植物;植物学】(从枯凋到再生的)一轮迥;天体运转的轨道。短语和例子the business cycle 商业盛衰的周期性。 the life cycle 【生物学】生命周期,生活史。 the Arthuri
Deltan heliographers observe an irregularity in the magnetic cycle of the star delta . the shift of the stars magnetic polarity which usually occurs every 12 years has occurred 1 year early 德尔塔日光仪观察到星球德尔塔的磁极周期不规则性变化;该星球每12年移动一次的磁极变化刚刚在一年前发生过。