周期的英文：
period
cycle

参考例句：
  • This is a calendar based on both lunar and solar cycles.
    这是基于日月周期的历法。
  • The tides come and go consistently with the lunar cycle.
    潮汐的来去与月周期一致。
  • Minor Cycles
    次圈数;次周期
  • Body temperature and the secretion of the hormone melatonin follow the daily cycle.
    体温及褪黑素分泌都受周期影响。
  • eustatic cycle is the interval of time during which a eustatic rise and fall of sea level takes place
    全球性海面升降周期是发生一次海平面升和降的时间间隔。
  • In Chinese there is a cycle of twelve years, each with a different animal.
    在中国有十二年的周期，每年都有一只不同的动物(十二生肖)。
  • In vitro analysis must be complemented by studies of the virus replication cycle in plants
    体外的分析必须辅之以植物体内病毒复制周期的研究。
  • A unit of time corresponding approximately to one cycle of the moon's phases, or about30 days or4 weeks.
    月大约和月亮盈亏的一个周期相当的时间单位，或约三十天或四周
  • The phenomena of cyclophysis and topophysis, are also consequences of developmental homeostasis
    周期特性和地方特性这些现象也是发育同形作用的结果。
  • It is possible to produce a result within 34 hours but the standard turnaround is 12 days.
    有可能在 34 小时之内得出结果，但正常的周期是 12 天。
period是什么意思：
n. 时间；时期；周期；经期；课时；局；句号
adj. 某一时期的；当时特有的
  • juvenile period
    幼年期(构成中心木质部的一段时期)
  • But this is a transitional period.
    但这是个转变过程。
  • The period includes the legal period and the period designated by the people's court.
    期间包括法定期间和人民法院指定的期间。
  • We'll call this time period the translation period.
    我们称这个时间周期为转化时期。
  • In this period, the cost would be enormous.
    在这期间，就会损失惨重。
cycle是什么意思：
n. 循环，周期；自行车；整个系列
v.（使）循环，（使）轮转；骑自行车
  • Then the market cycle overtook the political cycle.
    当时，市场周期超越了政治周期。
  • The seasons of the year make a cycle.
    一年四季构成一个循环。
  • The pedal of a cycle is attached to a crank.
    自行车的踏板与曲柄相连。
  • The machine cycles automatically.
    这台机器自动循环运转。
  • Captial turnover is a periodical cycle.
    资本周转是周期性的循环。

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