1) periodic characteristics
周期性特征
1.
The paper reviewed the periodic characteristics of the 6 main stages which China\'s grain production experienced in the past reform and opening up 30 years,and summed up the main factors impacting the grain stable growth at all stages.
系统回顾了改革开放30年来,我国粮食生产经历的6个主要阶段的周期性特征,归纳了各个阶段影响粮食稳定增长的主要因素;从制度创新、政策扶持、科技进步、防灾减灾等4个方面,概括总结了30年来我国发展粮食生产取得的成功经验;最后提出建立国家粮食安全长效机制的5点对策建议。
2) Periodic gradual change(PGC)
周期性缓变特征
3) Characteristic period
特征周期
1.
Statistic analysis of characteristic periods of response spectra for three soil layer constructions;
三种土层结构反应谱特征周期的统计分析
2.
In the characteristic period,which was very accorded with the objective condition.
应用模糊数学原理,提出了建筑场地类别划分的二次模糊综合评定以及特征周期的计算方法,并给出了模糊评定的数学模型,其评定结果与规范方法基本是一致的,在特征周期上更加符合场地的客观上的实际情况。
3.
Four scalar parameters(the response spectral predominant period T_p,the smoothed spectral predominant period T_o,the Fourier amplitude spectral mean period T_m,and the characteristic period T_g) those characterize the frequency content of strong ground motion are used to examine the characteristics of ground motions during the 1999 Chi-Chi earthquake.
以集集地震动记录为数据基础,对反映地震动频谱特征的4个参数周期(反应谱卓越周期Tp,平滑化反应谱卓越周期To,傅氏幅值谱平均周期Tm和反应谱特征周期Tg)进行了研究。
4) period characteristic
周期特征
1.
Analysis on the period characteristic of low flow in pearl river basin and effect factors;
珠江流域枯水期流量周期特征及影响因素分析
5) period character code
周期特征码
补充资料:周期性
周期性
periodicity
①事物反复有规律的变化,每一次变化称为一个周期。如生理状态下的心动周期、呼吸周期、月经周期等。②疾病过程中临床症状多次重复出现的规律性。如周期热、溃疡病周期性上腹部疼痛等。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条