adj. periodic ; periodical ; cyclical ; cyclic
这种以近似于——但不完全是——一天为周期的节律,叫做昼夜节律。
Such a rhythm whose period is approximately—but not exactly—a day is called circadian.
你处于更新周期的哪个阶段:是积极维持现状,还是选择性忘记过去,又或是大胆创造未来?
Where are you in the cycle of renewal: Are you actively preserving the present, or selectively forgetting the past, or boldly creating the future?
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。
5% And, it turns out that about 75% of the periodic table falls into this category.
而且,它表明元素周期表的,都属于这个种类。
So you should be able to look at your periodic table and see this, or also I've written the trend here.
大家应该能够通过查周期表,或者通过看我写在这里的趋势看出来。
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