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periodic

英 [ˌpɪəriˈɒdɪk]

美 [ˌpɪriˈɑːdɪk]

adj.  间发性的; 定期的; 周期的

CET6TOEFLTEM8医学

Collins.1 / BNC.7973 / COCA.7702

牛津词典

    adj.

    • 间发性的;定期的;周期的
      happening fairly often and regularly
      1. Periodic checks are carried out on the equipment.
        设备定期进行检查。

    柯林斯词典

    • ADJ 间发性的;定期的;周期的
      Periodicevents or situations happen occasionally, at fairly regular intervals.
      1. Periodic checks are taken to ensure that high standards are maintained.
        定期检查以确保维持高水准。
      2. ...periodic bouts of illness.
        周期性发病

    英英释义

    adj

    • recurring or reappearing from time to time
      1. periodic feelings of anxiety
      Synonym:occasional
    • happening or recurring at regular intervals
      1. the periodic appearance of the seventeen-year locust
      Synonym:periodical

    双语例句

    • The periodicity of positron annihilation parameter is related to periodic change of lattic distortion and crystal defect.
      正电子湮没参数的周期性,与点阵畸变和晶体缺陷的周期性变化有关。
    • The cycles are periodic and optional.
      循环是阶段性和可选择的。
    • By using properties of scalar almost periodic function, properties of uniform almost periodic matrix function are discussed.
      利用纯量概周期函数性质讨论了一致概周期矩阵函数的一些性质。
    • This system is intended to supplement the on-crank system by increasing the time intervals between periodic on-crank cleaning.
      此系统旨在通过增加定期曲柄上清洁之间的时间间隔对曲柄面系统进行补充。
    • Atomic structure and the periodic table.
      原子结构和元素周期表。
    • A circuit that provides periodic signals to control and synchronize other circuits.
      一种提供周期性信号的电路,用于控制和同步其它电路。
    • In chapter five, we calculate the conductance of two typical open periodic structures.
      在第五章中,我们计算了两种典型的开放周期型结构的电导。
    • The separability of asymptotically strongly periodic function space and asymptotically periodic sequence space are also discussed.
      研究了渐近强周期函数空间、渐近周期序列空间的可分性质。
    • A energy iteration method for periodic solutions to second order strongly nonlinear non-autonomous systems is suggested.
      给出了确定一般二阶强非线性非自治系统周期解的能量迭代方法。
    • The sum of a series of trigonometric expressions; used in the analysis of periodic functions.
      三角表达式级数之和,用在周期函数分析上。