周期性 [数] periodicity ; Cyclist ; cyclicality ; cyclicity
周期性因素 cyclical factor
博特周期性定理 Bott periodicity theorem
周期性瘫痪 Periodic paralysis ; hypokalemic periodic paralysis ; HOPP ; Familial periodic paralysis
周期性呼吸 [生理] Periodic breathing ; periodic respiration ; PB ; o
周期性的 periodic ; INTMT intermittent ; intermittent ; periodically
周期性失业 [劳经] cyclical unemployment ; periodic unemployment ; cyclical unemployment cyclical unemployment ; cyclical l umemployment
周期性波动 periodic fluctuation
非周期性速度波动 [机] aperiodic speed fluctuation ; aperiodic sp
周期性行业 cyclical business ; Cyclical Industry ; Cyclical Industries
经济活动常常遵循周期性模式。
进行周期性检查以确保高标准得以维持。
Periodic checks are taken to ensure that high standards are maintained.
他经历了周期性的变化。
if we think about electronegativity as a periodic trend we can just draw our nice periodic table here, and let's separate it into quadrants.
如果我们来思考一下电负性的周期性规律,我们可以把我们漂亮的周期表画在这,然后把它分成四个象限。
We'll then take a turn to talking about the periodic table, we'll look at a bunch of periodic trends, including ionization energy, electron affinity, electronegativity and atomic radius.
然后我们再开始讲元素周期表,我们会看到很多周期性规律,比如电离能,电子亲和能,电负性以及原子半径。
We have a table of the elements with properties varying periodically with atomic mass, so we compress all of that information and refer to it as the Periodic Table.
我们有一个元素表,其中的元素的特性,随着原子质量的改变而引起周期性的变化,所以我们将所有的信息精简,将它变成一个周期表。
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