1) fundamental period (frequency)
基本周期(频率)
4) periodicity/frequency
周期/频率
1.
Sub-pixel precision algorithm for fingerprint periodicity/frequency.
指纹周期/频率的亚像素精确算法
5) Fundamental period
基本周期
1.
A simple method of analysis is presented for calculating the deflection curve, elastic critical load and fundamental period of single and coupled shear wall structures with either uniform or variable thickness.
设计此类结构时，可从等厚度的情况入手，适当地减小其厚度，使其基本上保持原有的刚度、整体稳定及基本周期，而又获得经济效益。
2.
This paper includes an investigation on a model test for dynamic soil-structure interaction,the approximate effective fundamental period and the limit of considering the dynamic soil-structure interaction.
开展了土-结构动力相互作用的模型试验,探讨了框架结构的近似有效基本周期,并研究了考虑相互作用效应的界限。
3.
Empirical formulas for the relationships of the fundamental period ratio and damping factor with structure-to-soil stiffness ratio and mass ratio are presented.
其中上部结构与地基刚度比乃最为重要控制因素,随着上部结构与地基刚度比增大,土-结构动力相互作用影响更为明显,表征为柔性系统对刚性系统基本周期比与阻尼因子明显增大;上部结构与地基等效质量比变化对土-结构系统影响不甚明显。
6) base period
基本周期
1.
The article expounds the nature of periodic function and proves the existence of the base period of the continuous periodic function.
本文给出了周期函数的几个性质,并证明了连续的周期函数基本周期的存在性。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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