1) repeated frequencies
重频
1.
The minimum number of sensors for observing a normal structure and a structure with repeated frequencies is studied respectively based on dynamic system observability.
根据结构系统可观性,分别给出了观测一般结构和重频结构的前若干阶目标模态所需要最少传感器数量的估计方法。
2) repeated frequency
重复频率
1.
This text emphasizes interference probability and signal intensity, repeated frequency and interference power that decide dinterference effect was discussed, and their quantitative range by calculation was gained.
以干扰概率和信号强度作为研究的重点,讨论了决定干扰效果的关键参数——重复频率和干扰功率, 并通过计算得到它们的数量级范围。
4) Repetition frequency
重复频率
1.
Effect of electronic relaxation process on air breakdown caused by repetition frequency HPM
电子弛豫过程对重复频率高功率微波大气击穿的影响
2.
The detection probability calculating method about low pulse repetition frequency(LPRF) PD radar against air vehicle is studied.
提出了低脉冲重复频率(LPRF)PD雷达探测飞行器目标的发现概率计算方法。
3.
range accuracy,repetition frequency, beam divergence angle of laser range-finders is briefly introduced.
简述激光测距机主要参数校准装置的组成,通过对其主要参数(最大测程、最小测程、测距准确度、重复频率、束散角)的校准测量进行详细的不确定度分析,评价激光测距机主要参数校准装置的达标程度。
5) time-frequency reassignment
时频重排
1.
Multiple window time-frequency reassignment based on Hermite window functions;
基于Hermite窗函数的多窗口时频重排方法
2.
Multi-components LFM signal recognition based on time-frequency reassignment and Wigner-Hough transform
基于时频重排与WHT的多分量LFM信号识别
3.
A time-frequency associated analyzed method based on wavelet transform and time-frequency reassignment and Hough transform is proposed.
针对传统的多分量LFM信号检测与参数估计中存在的精度不高和交叉项问题,将小波重排与Hough变换结合起来,首先对信号进行小波变换,克服交叉项干扰,再经过时频重排保证精度,以重排后的时频分布作为图像,利用Hough变换通过查表的方式,实现对各分量的依次截取和参数估计。
6) repetitive frequency
重复频率
1.
In this paper, the factors of effect on repetitive frequency of gas switch are analysed.
分析了影响气体开关重复频率的各因素 ,从理论上推导了开关耗能的恢复时间以及气体的冷却时间对重复频率的影响。
2.
Although the single-trigger Er laser has been used in many fields, there is no report on Er laser operation at high repetitive frequency.
94μm铒激光因其独特的波长在医学上受到人们的广泛重视,虽然单次触发的铒YAG激光器已经得到应用,但国内还没有重复频率铒YAG激光器的报道,所以本文提出并完成了一台重复频率铒YAG激光器的整体设计。
3.
Filled with pure SF6 gas in switch cavity,the Marx generator works stably in the repetitive frequency of 1~50 Hz.
介绍了发生器的结构特点,采用有限元数值方法对开关腔体内静电场进行了3维模拟计算,通过理论分析和实验研究,研制了1台12级重复频率Marx发生器,该发生器采用正负双边恒流充电方式及全电感隔离,其主要元器件间基本呈无感排列,结构简单、紧凑。
补充资料：半频哪醇重排
分子式：
CAS号：
性质：与频哪醇类似，邻氨基醇在亚硝酸作用下也可以发生重排。例如：1，1-二苯基-2-氨基-1-丙醇在亚硝酸作用下可重排为1，2-二苯基-1-丙酮：这种类型的重排，被称为半频哪醇重排。
CAS号：
性质：与频哪醇类似，邻氨基醇在亚硝酸作用下也可以发生重排。例如：1，1-二苯基-2-氨基-1-丙醇在亚硝酸作用下可重排为1，2-二苯基-1-丙酮：这种类型的重排，被称为半频哪醇重排。
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