periodicity
美 
英 [ˌpɪərɪə'dɪsɪtɪ]
- n.频率；【电】周波；【医】定期发作；【天】定期出现
- 网络周期性；间发性；定期性
英汉解释
n. | 1. 周率,频率;【电】周波;【医】定期发作;【天】定期出现;【化】周期表中的位置 |
英英解释
例句
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；
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。
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。
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。
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。
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。
The treatments varied because pelvic sores occurred repeated without any periodicity and symptoms were different due to various causes.
以非周期性反复发作的盆腔疼痛为特点，不同疾病引起的疼痛体征不尽相同，治疗方法也不同。
Regular irregularities occur with constant periodicity and are usually associated with partial heart block.
规律的不整脉随固定周期出现，而且常伴有心脏部分传导阻滞。
The enterprise has high similar characteristic to the biology in growth, competition, environment adaptability and periodicity etc.
企业具有与生物高度相似的成长性、竞争性、环境适应性、周期性等特征。
The redshift periodicity is evidence for past oscillations in the expansion rate of the universe. . .
该红移的周期性是过去宇宙膨胀速率变化的证据…
The science and education sustainable development ability of Gansu Province enhances periodicity, assuming the broken line rise condition.
甘肃省科教可持续发展能力周期性提高，呈折线型上升状态。
The resources allocated remain allocated to the client station in each frame satisfying a predetermined periodicity until deallocated.
分配的资源在满足预定周期的每个帧中对客户站保持分配给客户站直至被释放。
The climate changes affect the climate output of winter wheat with a remarkable periodicity.
气候变化对冬小麦气候产量的影响具有明显的周期性。
The frequency should take into account many parameters including disease types and stages, treatment periodicity and standard practice.
确定随访频率时要考虑许多参数，如疾病类型、分期、治疗周期和标准操作等。
The repeated emergence of seismites in strata section shows that the movement of boundary faults has periodicity and periodicity.
震积岩在地层剖面中多次出现表明边界断裂的活动具有周期性和幕式特点。
However, the wavelength periodicity elapses gradually when the individual sections length follows Gaussian distribution.
不符合实际情况。当短双折射光纤段不等长且服从高斯分布时，周期性逐渐消失；
Periodicity of nuclear properties began to show up .
原子核性质的周期性开始显示出来了。
The crystal lattice and the metallic reflector are used to define a photon crystal with planar periodicity structure.
借该面晶格及金属反射层限定出一二维周期性结构的光子晶体。
The predicting methods used are multiplied periodicity, criterion of activity in quiescence and the geophysical disaster chain.
所用的预测方法是倍周期性、静中动判据和地球物理灾害链。
As the temperature rises, forming load decreases, and the curves of load-stroke shows serrated periodicity rule.
成形载荷随着温度的升高而降低，且呈现出周期性锯齿状载荷-行程曲线。
arranged by atomic weights for the most part, and this arrangement revealed the periodicity of chemical properties.
在门捷列夫的周期表中，大部分的元素按原子量进行排列，而这种排列揭示了化学性质的周期性。
Linguistic meme has the characteristics of the selectivity of imitation, the periodicity of copy and the variability of spreading.
语言模因具有模仿的选择性、复制的周期性以及传播的变异性等特点。
Conclusion: Dilantin cataplasm has good effect and small side effects on oral ulcer, can prolong the periodicity of relapse.
结论苯妥英纳作为非糖皮质激素类药物治疗口腔溃疡，疗效肯定，副作用小，复发周期延长。
The identification for the periodicity and pitch order of low noise tread patterns was investigated.
研究轮胎花纹的周期性和节距排列辨识方法。
The scale and periodicity of the shear-layer vortices are modulated with acoustic excitation.
随著声波激扰频率的变化，剪流层涡漩尺寸及时序可受支配。
So, according to the periodicity theory of crisis management, the paper put forward to three-tier prevention for public health emergencies.
为此，本文根据危机管理的周期理论，提出了突发公共卫生事件的三级预防，以研究和探讨如何全面预防和控制突发公共卫生事件。
The mixed autoregressive moving average (ARMA) and hidden periodicity model is chosen to predict a short term series of electricity price.
应用混合自回归滑动平均潜周期模型对短期电价序列进行了预测。
Setting this value closer to 1 favors the discovery of many near-periodic patterns and the automatic generation of periodicity hints.
如果将此值设置为更接近于1的数，则允许查找许多接近周期的模式并允许自动生成周期提示。
The results show that the high-order effects destroy the periodicity of high-order solitons evolution.
计算结果表明：高阶效应使高阶孤子的演化不再具有周期性特性。
The best transform period was secondly defined, and the best periodicity theorem for cat map was given.
定义了矩阵变换的最佳周期概念，给出了猫映射的最佳周期性定理。
Periodicity, continuity and correlation of sound data are wiped off and randomicity is extracted.
去除声波数据的周期性、连续性、相关性，提取其随机性。
the perfect periodicity of field entropy will be destroyed due to the linear modulation.
线形调制使场熵呈现的完美周期性振荡遭到破坏。
The sun is not the source of the periodicity of 'dyings', is that correct?
太阳并不是造成周期性生物灭绝的原因，这个观点正确吗？
so it should be based on irrigation modes and actual production conditions when determining irrigation quantity and periodicity.
确定灌水量和灌水周期时应根据灌溉模式和生产实际情况而定。
moreover, the signal amplitude and particle flight rime possess periodicity.
这些信号的幅值、颗粒飞行时间的变化分布具有周期性。
The hail times decreased dramatically in recent 10 years. The annual variation is relatively great and has certain periodicity.
近10年来冰雹大为减少，年际变化比较大，有一定的周期性。
Electrical load is a system with strong periodicity and randomicity .
电力负荷是一个周期性和随机性都很强的系统。
The numbers are not intermixed chaotically and accidentally but are subject to regular periodicity.
这些数字并非混杂、混沌和随机的，而是受制于有规律的周期。
the slug-churn flow loses the periodicity of slug flow and churn flow, and the amplitude fluctuation is high.
段塞-混状流纹理特征参数指标丧失了段塞和混状流的周期性变化特点，幅度变化较大。
It is necessary to analyze economic effect on EU through tests of economic periodicity and homogeneity among members.
通过对欧盟全部成员国相互间经济周期性和同质性检验，分析此次扩张对盟内带来的经济作用。
