大家都搜：
n.[数]周期性；频率；定期性
1、conciliar period───调解期
2、periodicals mt───期刊mt
3、period of time───一段时间；时段；n.时段，一段时间
4、valence electrons periodic table───价电子周期表
5、antiperiodic definition───反周期定义
6、superiors osrs───上级OSR
7、devonian period───[地质]泥盆纪
8、romantic period───浪漫主义时期
9、periotical inventory───眶周盘存
10、hellenistic period art───希腊化时期的艺术
1、These data have established a strong connection between variations in the Earth's orbit and the periodicity of the ice ages.───这些数据已经建立了地球轨道变化和冰期周期之间的强有力的联系。
2、The finely grounded PAA was crystal polymer and its structure unit arranged periodicity with a little crystal lattice disfigurement.───分离得到的PAA为结晶聚合物，结构单元呈周期性排列，但存在一定的晶格缺陷。
3、It was analyzed how the photonic crystal periodicity and liquid thickness affect the Q value of the sensor.───文章分析了传感器Q值与光子晶体周期数及被探测液体厚度之间的关系。
4、We observed a clear periodicity in the number of whales stranded each year that coincides with a major climatic cycle.───我们观察到每年搁浅的鲸鱼数量有明显的周期性，这与一个主要的气候周期相吻合。
5、The research resultsshowedthat the population density of rodents fluctuated obviously among different years, but there was no periodicity.───研究结果表明，不同年间啮齿类种群密度波动明显，但无周期性；
6、The former repulses all the way and the repulsive forces are weaker than those of bright solitons. They have no periodicity, either.───而后者从一开始就相互排斥，且这种排斥作用较亮孤子来说相当微弱，同样也不具有周期性。
7、The utility model has the advantages of low cost, short manufacture periodicity and one-step forming for the side wall of the car.───使其与现有技术相比，具有成本低，制作周期短，使轿车侧围能一次成型的特点。
8、The suddenness, contingency and periodicity of its occurrence were explored and suggestions about the forecast of the pest were made.───探讨了发生的突发性、偶然性、周期性，并对该虫的调查测报等工作提出了建议。
9、Commensurability is an extension of periodicity.───可公度性是周期性的扩张。
1、These reports will vary in periodicity and content.
2、Other features of migraine, such as the distinct periodicity and vomiting, may be lacking.
3、There was a primary periodicity of about 2.8 years for snow cover.
4、Periodicity is the consequence of activity propagating through the closed loop.
5、Periodicity advance model of 1 - D slab symmetry detonation wave is investigated.
6、The periodicity in the distribution of quasar redshifts is interpreted assuming that the cosmological space is a topologically compactified manifold like three dimensional torus.http://Sentencedict.com
7、It is shown that the periodicity and weakening surge is caused by the interaction between the self-excitation of the resonant circuit and transferred electron oscillation of the switch.
8、Periodicity of nuclear properties began to show up.
9、The three kind distributions are periodicity distribution, multiplier periodicity distribution and the golden section distribution.