periodicity

单词periodicity

基本解释

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

• 周率,频率;【电学】周波;【医学】定期发作;【天文学】定期出现;【化学】周期表中的位置

• 循环性

• 定期[周期]性;间发性;周期数

• 周期律

• 〔物〕周期性

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…