1) Change the frequency of disasters
灾害频率变化
3) disaster frequency
灾害频数
1.
Based on the population and the natural disaster database of counties in China, this paper adopts population density, which shows hazard-affected population, and disaster frequency, which reflects intensity of natural disasters, to establish the corresponding relationship between them.
依据灾害系统理论与中国县域人口、自然灾害数据库,采用反映人口承灾体的人口密度和反映自然灾害强度的频数,建立二者的对应关系,将中国划分为 15个不同的人口密度与综合自然灾害频数等级组合类型。
4) frequency changes
频率变化
1.
An algorithm for striking method of system frequency changes based on Fourier transform
一种基于傅式变换算法的系统频率变化求取方法
5) change frequence
变化频率
1.
The change frequences of intensity of nodes in different directions are different.
提出了一种新的传感器节点角度测量方法,即在信标节点发出变频干涉波,通过检测干涉场各点处合成波强度的变化频率来确定未知节点的角度的测量方法。
6) Acid change speed
酸害变化率
补充资料：频度
1.梵语音译。点。指有形物组成的最小部分。
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