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都江堰水利工程双语简介 中文+英文

2024-05-21 21:17:03

    The Dujiangyan Dam, 45km north of Chengdu, is an ancient technological wonder of the country. More than 2000 yers ago, Li Bing(250-200BC), as a local governor of the Shu State, designed...

(完整版)四年级解方程计算题

2024-04-26 04:25:09

小学四年级解方程练习题一  解方程3X+5X=48           14X-8X=12           65+2X=44 20X-50=50         88-6X=28         2...

频率分辨率的两种解释

2024-02-22 16:14:58

终于搞懂了频率分辨率的两种解释标签:频率分辨率  分类:科研解释一:频率分辨率可以理解为在使用DFT时,在频率轴上的所能得到的最小频率间隔f0=fs/N=1/NTs=1/T,其中N为采样点数,fs为采样频率,Ts为采样间隔。所以NTs就是采样前模拟信号的时间长度T,所以信号长度越长,频率分辨率越好。是不是采样点数越多,频率分辨力提高了呢?其实不是的,因为一段数据拿来就确定了时间T,注意:...

摩斯密码表

2024-02-18 15:39:19

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中国故事(双语)18:BetterLateThanNever亡羊补牢,未为迟也

2024-01-13 10:11:47

中国故事(双语)18:BetterLateThanNever亡羊补牢,未为迟也18、Better Late Than Never 亡羊补牢,未为迟也A farmer named Chien Ye Chao and his wife, Yu Qing, lived and worked on their family farm in a remote village. Farming wa...

高中英语高考读后续写探险救援类素材(共四个方面)

2023-12-17 21:51:08

高考英语读后续写探险救援类素材一、遭遇危险1.恶劣环境The Sky is overcast with clouds. (天空)天空乌云密布。The icy wind was howling, stinging my face.寒风呼啸,我的脸如针刺。(狂风&寒冷)A flash of lightning lit up the whole sky, followed by a crash...

element-ui的响应式栅格布局(Layout布局)

2023-12-14 17:28:20

element-ui的响应式栅格布局(Layout布局)1.基础栅栏flex布局对齐方式<el-row :gutter="20"><el-col :span="6"><div ></div></el-col><el-col :span="6"><div class="backgroud-color:#e5e9f2;"&g...

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